:root {
  --color-bg: #F8FAFC;
  --color-surface: #ffffff;
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-accent: #38BDF8;
  --color-text: #1E293B;
  --color-muted: #64748B;
  --color-border: #E2E8F0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: 0.25s ease;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  font-size: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', 'Golos Text', 'Segoe UI', system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.muted {
  color: var(--color-muted);
}

main {
  flex-grow: 1;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0;
}

.brand {
  display: flex;
  align-items: center;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-text);
}

.brand-logo {
  display: block;
  height: 56px;
  width: auto;
}

.brand-name {
  color: inherit;
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
}

.brand-dot {
  color: var(--color-primary);
  font-size: 0.95em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-nav form {
  margin: 0;
}

.main-nav--staff {
  gap: 0.75rem;
}

.staff-nav-role {
  font-weight: 600;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(37, 99, 235, 0.08);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
}

.staff-nav-role strong {
  color: var(--color-primary);
}

.staff-nav-logout {
  margin: 0;
}

.staff-nav-logout .btn {
  margin-left: 0;
}

.nav-greeting {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: var(--radius-md);
  padding: 0.65rem 1.4rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
}

.btn:focus {
  outline: 3px solid rgba(37, 99, 235, 0.2);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: var(--color-primary);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(56, 189, 248, 0.08);
}

.btn-block {
  width: 100%;
}

.btn-small {
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
}

.btn-gradient {
  background: linear-gradient(90deg, #4361ee 0%, #50c9ff 100%);
  color: #fff;
  border: none;
  padding: 0.55rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  text-decoration: none;
  line-height: 1;
}

.btn-gradient:hover {
  opacity: 0.95;
}

.btn-gradient.btn-gradient-muted {
  background: linear-gradient(90deg, #9aa5b1 0%, #d7dde4 100%);
  box-shadow: var(--shadow-sm);
}

.btn-gradient.btn-gradient-muted:disabled {
  opacity: 0.85;
  cursor: not-allowed;
}


.hero {
  padding: 5rem 0;
  position: relative;
  background: radial-gradient(circle at 100% 0%, rgba(37, 99, 235, 0.05) 0%, transparent 60%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; }
}

.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-text p {
  color: var(--color-muted);
  font-size: 1.2rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.hero-license {
  margin-top: -1rem;
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}

.hero-license a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid rgba(37, 99, 235, 0.3);
  transition: border-color var(--transition);
}
.hero-license a:hover {
  border-color: var(--color-primary);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-actions .btn {
  padding: 0.8rem 1.8rem;
  font-size: 1.05rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-visual::before {
  content: '';
  position: absolute;
  width: 120%;
  height: 120%;
  background: radial-gradient(circle at center, rgba(56, 189, 248, 0.1), transparent 60%);
  z-index: -1;
  top: -10%; left: -10%;
}

.hero-image {
  width: 100%;
  max-width: 500px;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  transform: translateY(0);
  transition: transform 0.5s ease;
}
.hero-image:hover {
  transform: translateY(-8px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding-bottom: 5rem;
  margin-top: -2rem;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card h2 {
  margin-top: 0;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0;
}


.auth-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  min-height: calc(100vh - 70px);
  padding: 0;
  background: var(--color-bg);
  margin: 0;
}

.auth-visual {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.auth-visual::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.1), transparent 50%);
}

.auth-visual-content {
  text-align: center;
  color: #fff;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.auth-visual-content h2 {
  font-size: 2rem;
  margin: 0 0 1rem;
  font-weight: 700;
}

.auth-visual-content p {
  opacity: 0.8;
  font-size: 1.1rem;
  line-height: 1.5;
  margin: 0;
}

.auth-card-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: 24px 0 0 24px;
}

.auth-card {
  background: transparent;
  border-radius: 0;
  padding: 0;
  width: min(420px, 100%);
  box-shadow: none;
  border: none;
}

.auth-card h1 {
  margin: 0 0 1rem;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.auth-subtitle {
  color: var(--color-muted);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

.auth-form label {
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: block;
}

.auth-form input {
  width: 100%;
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition);
  background: var(--color-bg);
}

.auth-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

@media (max-width: 768px) {
  .auth-wrapper { grid-template-columns: 1fr; }
  .auth-visual { display: none; }
  .auth-card-container { border-radius: 0; }
}

.manager-auth-wrapper {
  padding: 4rem 1rem 5rem;
}

.manager-auth-actions {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.manager-auth-actions .btn {
  width: 100%;
}

.manager-auth-back {
  text-align: center;
}

@media (min-width: 560px) {
  .manager-auth-actions {
    flex-direction: row;
    align-items: center;
  }

  .manager-auth-actions .btn {
    flex: 1;
    width: auto;
  }

  .manager-auth-back {
    flex: 0 0 auto;
  }
}

.auth-subtitle {
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-form label {
  font-weight: 600;
  font-size: 0.95rem;
}

.auth-form input {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.auth-form input:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  outline: none;
}

.admin-dashboard {
  padding: 3rem 0 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.admin-dashboard-header h1 {
  margin-bottom: 0.5rem;
}

.admin-dashboard-header p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.manager-dashboard {
  padding: 3rem 0 4rem;
}

.manager-dashboard .container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.manager-dashboard__card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(37, 99, 235, 0.08);
  box-shadow: var(--shadow-sm);
}

.manager-dashboard__card--primary {
  background:
    linear-gradient(135deg, rgba(67, 97, 238, 0.12), rgba(56, 189, 248, 0.08)),
    var(--color-surface);
}

.manager-dashboard__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.manager-dashboard__cta {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.manager-dashboard__helper {
  margin: 0;
  font-size: 0.9rem;
}

.manager-dashboard__list {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  line-height: 1.5;
}

.manager-dashboard__list li + li {
  margin-top: 0.35rem;
}

.manager-messages {
  padding: 3rem 0 4rem;
}

.manager-messages__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.manager-messages__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.manager-messages__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.manager-messages__counter {
  font-weight: 600;
  color: var(--color-primary);
}

.manager-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2.5rem;
}

.manager-section__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.manager-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: rgba(67, 97, 238, 0.12);
  color: var(--color-primary);
  font-weight: 600;
}

.manager-badge--muted {
  background: rgba(95, 99, 104, 0.15);
  color: var(--color-muted);
}

.manager-thread-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.manager-thread-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid rgba(67, 97, 238, 0.09);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.manager-thread-card--urgent {
  border-color: rgba(244, 67, 54, 0.35);
  box-shadow: var(--shadow-sm);
}

.manager-thread-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.manager-thread-card__name {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.manager-thread-card__name-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Brand badge ── */
.manager-brand-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.6;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand-color, #2563EB) 14%, transparent);
  color: var(--brand-color, #2563EB);
  white-space: nowrap;
  flex-shrink: 0;
}

.manager-thread-card__login {
  margin: 0.15rem 0 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.manager-thread-card__unread {
  min-width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(244, 67, 54, 0.15);
  color: #b71c1c;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.manager-thread-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.manager-thread-card__courses {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.manager-thread-card__course {
  border-radius: var(--radius-md);
  padding: 0.2rem 0.75rem;
  background: rgba(67, 97, 238, 0.12);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.82rem;
}

.manager-thread-card__course--basic {
  background: rgba(46, 125, 50, 0.15);
  color: #1e7d32;
}

.manager-thread-card__preview {
  margin: 0;
  color: var(--color-text);
  line-height: 1.5;
  font-size: 0.95rem;
}

.manager-thread-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.manager-empty-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(67, 97, 238, 0.4);
  padding: 2rem;
  text-align: center;
  color: var(--color-muted);
  box-shadow: var(--shadow-sm);
}

.manager-thread {
  padding: 3rem 0 4rem;
}

.manager-thread__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.manager-thread__eyebrow {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.manager-thread__header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.login-as-tip {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background: #1a1a2e;
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md, 8px);
  font-size: 0.85rem;
  line-height: 1.4;
  white-space: nowrap;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  animation: fadeInTip .2s ease;
}
@keyframes fadeInTip {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--accent, #4361ee);
  color: var(--accent, #4361ee);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.btn-outline:hover {
  background: var(--accent, #4361ee);
  color: #fff;
}

.manager-thread__courses {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.manager-thread__course {
  border-radius: var(--radius-md);
  background: rgba(67, 97, 238, 0.12);
  padding: 0.25rem 0.85rem;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}

.manager-thread__course--basic {
  background: rgba(46, 125, 50, 0.15);
  color: #1e7d32;
}

.manager-thread__messages {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: 100%;
  overflow-y: auto;
  padding-right: 0.5rem;
  min-height: 100%;
}

.manager-thread__panel {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(67, 97, 238, 0.12);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: calc(100vh - 260px);
  min-height: 420px;
}

.manager-thread__messages-wrap {
  flex: 1;
  border: 1px solid rgba(67, 97, 238, 0.15);
  border-radius: var(--radius-md);
  background: rgba(67, 97, 238, 0.03);
  padding: 1rem;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 300px;
}

.manager-thread__messages-wrap .manager-empty-card {
  margin: 0;
}

.manager-message {
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
  border: 1px solid rgba(37, 99, 235, 0.08);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.manager-message--visitor {
  border-color: rgba(67, 97, 238, 0.15);
}

.manager-message--manager {
  border-color: rgba(46, 125, 50, 0.25);
  background: rgba(46, 125, 50, 0.07);
}

.manager-message--tutor {
  border-color: rgba(251, 140, 0, 0.3);
  background: rgba(251, 140, 0, 0.08);
}

.manager-message__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 0.6rem;
}

.manager-message__body {
  margin: 0;
  line-height: 1.5;
}

.manager-thread__form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin: 0;
}

.manager-thread__composer {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 3.25rem 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.manager-thread__composer:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.manager-thread__composer textarea {
  border: none;
  width: 100%;
  resize: none;
  font-size: 1rem;
  line-height: 1.4;
  max-height: 180px;
  min-height: 26px;
  overflow-y: hidden;
  font-family: inherit;
}

.manager-thread__composer textarea:focus {
  outline: none;
}

.manager-thread__send {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, #6f5dff, #8b6dff);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.manager-thread__send svg {
  width: 18px;
  height: 18px;
}

.manager-thread__send:hover {
  transform: translateY(calc(-50% - 2px));
  box-shadow: var(--shadow-sm);
}

.manager-thread__form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

/* ── Dashboard: stats & recent ── */
.manager-dashboard__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.manager-dashboard__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.manager-stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(37, 99, 235, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.manager-stat-card__value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.manager-stat-card__label {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.manager-stat-card--action {
  display: flex;
  align-items: center;
  justify-content: center;
}

.manager-stat-card--action .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.manager-dashboard__card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.manager-dashboard__link {
  font-size: 0.9rem;
  color: var(--color-primary);
  text-decoration: none;
}

.manager-dashboard__link:hover {
  text-decoration: underline;
}

.manager-dashboard__recent {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.manager-recent-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(67, 97, 238, 0.06);
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
}

.manager-recent-row:last-child {
  border-bottom: none;
}

.manager-recent-row:hover {
  background: rgba(67, 97, 238, 0.04);
}

.manager-recent-row--unread {
  background: rgba(244, 67, 54, 0.03);
}

.manager-recent-row__info {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  min-width: 0;
}

.manager-recent-row__info strong {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.manager-recent-row__preview {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  min-width: 0;
  font-size: 0.9rem;
  overflow: hidden;
}

.manager-recent-row__preview > span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.manager-recent-row__channel {
  flex-shrink: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  font-weight: 600;
}

.manager-recent-row__right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  white-space: nowrap;
}

.manager-recent-row__badge {
  min-width: 24px;
  height: 24px;
  border-radius: 12px;
  background: rgba(244, 67, 54, 0.15);
  color: #b71c1c;
  font-weight: 700;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── Messages: search & actions ── */
.manager-messages__actions {
  display: flex;
  gap: 0.5rem;
}

.manager-messages__search {
  margin-bottom: 1.5rem;
}

.manager-search-input {
  width: 100%;
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  background: var(--color-surface);
  transition: border-color var(--transition);
}

.manager-search-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ── Thread: message actions (edit/delete) ── */
.manager-message__header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.manager-message__edited {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-style: italic;
}

.manager-message__actions {
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.15s;
}

.manager-message:hover .manager-message__actions {
  opacity: 1;
}

.manager-msg-action {
  width: 26px;
  height: 26px;
  border: none;
  background: rgba(67, 97, 238, 0.08);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  transition: background 0.15s, color 0.15s;
}

.manager-msg-action:hover {
  background: rgba(67, 97, 238, 0.18);
  color: var(--color-primary);
}

.manager-msg-action--del:hover {
  background: rgba(244, 67, 54, 0.15);
  color: #d32f2f;
}

.manager-message--deleted {
  opacity: 0.6;
}

.manager-message__body--deleted {
  font-style: italic;
  color: var(--color-muted);
}

.manager-edit-textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm, 8px);
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  resize: vertical;
  min-height: 50px;
  font-family: inherit;
}

.manager-edit-buttons {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

/* ── Modal: new conversation ── */
.manager-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.manager-modal-overlay[hidden] {
  display: none;
}

.manager-modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-lg, 0 8px 32px rgba(0, 0, 0, 0.18));
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.manager-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(67, 97, 238, 0.08);
}

.manager-modal__header h2 {
  margin: 0;
  font-size: 1.15rem;
}

.manager-modal__close {
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-muted);
  border-radius: 50%;
  transition: background 0.15s;
}

.manager-modal__close:hover {
  background: rgba(0, 0, 0, 0.06);
}

.manager-modal__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.manager-modal__body label {
  font-weight: 600;
  font-size: 0.9rem;
}

.manager-modal__textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
  resize: vertical;
  font-family: inherit;
  min-height: 80px;
}

.manager-select {
  width: 100%;
  padding: 0.55rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  background: var(--color-surface);
}

.manager-user-results {
  max-height: 200px;
  overflow-y: auto;
}

.manager-user-result {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  cursor: pointer;
  border-radius: var(--radius-sm, 8px);
  transition: background 0.1s;
}

.manager-user-result:hover {
  background: rgba(67, 97, 238, 0.08);
}

.manager-new-conv-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(67, 97, 238, 0.08);
}

@media (max-width: 720px) {
  .manager-messages__header {
    flex-direction: column;
  }

  .manager-messages__meta {
    align-items: flex-start;
  }

  .manager-thread__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .manager-thread__form-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .manager-thread__form-footer .btn {
    width: 100%;
  }

  .manager-thread__panel {
    height: auto;
  }

  .manager-recent-row {
    grid-template-columns: 1fr auto;
  }

  .manager-recent-row__preview {
    display: none;
  }
}

@media (max-width: 640px) {
  .manager-dashboard__top {
    flex-direction: column;
  }

  .manager-dashboard__card {
    padding: 1.5rem;
  }

  .manager-stat-card {
    padding: 1rem;
  }

  .manager-stat-card__value {
    font-size: 1.5rem;
  }
}

.admin-dashboard-meta {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.admin-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.admin-action-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
  padding: 1.4rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(67, 97, 238, 0.14);
  background: #fff;
  box-shadow: var(--shadow-sm);
  gap: 0.65rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-primary);
  cursor: default;
}

.admin-action[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.admin-action .is-disabled {
  opacity: 0.6;
  pointer-events: none;
}

.admin-action:hover {
  border-color: var(--color-primary);
  background: #fff;
}

.admin-action-primary {
  border-style: solid;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
}

.admin-upload-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  width: 100%;
}

.admin-upload-form input[type='file'] {
  display: none;
}

.admin-action-upload {
  width: 100%;
}

.admin-action-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: stretch;
}

.admin-action-form h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text);
}

.admin-sim-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}

.admin-sim-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem;
  background: #fff;
}

.admin-sim-card h4 {
  margin: 0 0 0.5rem 0;
  font-size: 0.95rem;
}

.admin-sim-row {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.4rem;
}

.admin-sim-row input[type='number'] {
  width: 100%;
}

.admin-inline-form {
  display: flex;
  gap: 0.5rem;
}

.admin-input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.9rem;
}

.btn-danger {
  background: #e53935;
  border-color: #e53935;
  color: #ffffff;
}

.btn-danger:disabled {
  opacity: 0.5;
}

.admin-upload-help {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}
.admin-upload-file {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}
.admin-upload-submit {
  margin-top: 0.4rem;
}

.admin-upload-summary {
  margin-top: 2.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid rgba(67, 97, 238, 0.12);
  box-shadow: var(--shadow-sm);
}

.admin-upload-summary h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.admin-upload-summary p {
  margin-top: 0;
  color: var(--color-muted);
}

.admin-upload-list {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 1rem;
}

.admin-upload-question {
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.admin-upload-answers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.admin-upload-answers li {
  font-size: 0.95rem;
}

.admin-upload-answers .answer-correct {
  color: #2e7d32;
}

.admin-upload-answers .answer-wrong {
  color: var(--color-muted);
}

.alert {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-weight: 500;
}

.alert-error {
  background: rgba(244, 67, 54, 0.08);
  color: #c62828;
  border: 1px solid rgba(244, 67, 54, 0.25);
}

.alert-success {
  background: rgba(52, 168, 83, 0.12);
  color: #2e7d32;
  border: 1px solid rgba(52, 168, 83, 0.28);
}

.alert-warning {
  background: rgba(255, 193, 7, 0.15);
  color: #8a6d3b;
  border: 1px solid rgba(255, 193, 7, 0.3);
}

.course-selection {
  padding: 3rem 0 4rem;
}

.course-selection-header h1 {
  margin-bottom: 0.5rem;
}

.course-selection-header p {
  color: var(--color-muted);
  margin-top: 0;
}

.course-empty {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
}

.course-empty-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(67, 97, 238, 0.4);
  padding: 2.5rem 2rem;
  max-width: 460px;
  text-align: center;
  color: var(--color-muted);
  box-shadow: var(--shadow-sm);
}

.course-grid {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}


.course-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.course-card:hover::before {
  opacity: 1;
}

.course-card-progress-wrapper {
  gap: 1.25rem;
}

.course-card-main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.course-card-info {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.course-card h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
}

.course-card-progress {
  width: 100%;
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  justify-content: flex-start;
}

.course-card-progress-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.95rem;
  color: var(--color-text);
}

.course-card-progress-text strong {
  font-weight: 700;
  font-size: 1.1rem;
}

.course-card-progress-text span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.course-card-progress-empty {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.course-card-progress-ring {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: conic-gradient(var(--color-primary) var(--progress), var(--color-border) 0);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  flex-shrink: 0;
}

.course-card-progress-ring::before {
  content: '';
  position: absolute;
  inset: 5px;
  background: var(--color-surface);
  border-radius: 50%;
}

.course-card-progress-ring span {
  position: relative;
  z-index: 1;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

.course-card-groups {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.course-card-group-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.course-group-badge {
  display: inline-flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-text);
  font-weight: 500;
}

.course-type {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.course-type-main {
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.course-type-demo {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}


.course-category,
.course-description,
.course-role {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.5;
}

.course-category {
  font-weight: 600;
  color: var(--color-primary);
}

.course-role {
  margin-top: auto;
  font-size: 0.95rem;
}


.course-overview {
  padding: 3rem 0 5rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.course-header-top {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.course-overview-header h1 {
  margin: 0;
  line-height: 1.2;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.course-header-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
}

.course-header-card-left {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  flex: 1;
}



.course-header-group-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.course-group-badge {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.95rem;
}

.course-header-meta-pill {
  color: var(--color-muted);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.course-header-meta-pill::before {
  content: '·';
  color: var(--color-border);
  font-weight: bold;
}



.course-header-btns {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.course-header-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.course-header-btn:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.course-header-btn-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.course-header-btn-accent {
  background: var(--color-primary);
  color: #fff;
  border-color: transparent;
}
.course-header-btn-accent:hover {
  background: var(--color-primary-dark);
  color: #fff;
  border-color: transparent;
}

.course-group-progress {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  align-self: stretch;
  margin-bottom: 0;
  width: 100%;
}

.course-group-progress-ring,
.course-card-progress-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  font-weight: 700;
  color: var(--progress-text-color, var(--color-primary));
  background: conic-gradient(
    var(--progress-color, var(--color-primary)) var(--progress-value, 0%),
    var(--color-border) 0
  );
  flex-shrink: 0;
}

.course-group-progress-ring::after,
.course-card-progress-ring::after {
  content: '';
  position: absolute;
  inset: 5px;
  background: var(--color-bg);
  border-radius: 50%;
}

.course-group-progress-ring span,
.course-card-progress-ring span {
  position: relative;
  font-size: 0.95rem;
  z-index: 1;
}

.course-group-progress-ring.progress-low {
  --progress-color: rgba(37, 99, 235, 0.4);
  --progress-text-color: var(--color-primary);
}

.course-group-progress-ring.progress-mid {
  --progress-color: var(--color-primary);
  --progress-text-color: var(--color-primary);
}

.course-group-progress-ring.progress-good {
  --progress-color: var(--color-accent);
  --progress-text-color: var(--color-accent);
}

.course-group-progress-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.course-group-progress-text p {
  margin: 0;
  font-weight: 700;
  color: var(--color-text);
  font-size: 1.05rem;
}

.course-group-progress-text small {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.course-header-card-right {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
  flex-shrink: 0;
  min-width: 240px;
}

.course-header-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
  text-decoration: none;
  padding: 0.5rem;
}
.course-header-back:hover {
  color: var(--color-primary);
}


.group-samples {
  padding: 2.5rem 0 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.sample-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid rgba(32, 33, 36, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sample-preview {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(32, 33, 36, 0.08);
  background: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 180px;
}

.sample-preview img {
  max-width: 100%;
  height: auto;
  display: block;
}

.sample-actions {
  display: flex;
  justify-content: flex-start;
}

.course-overview-description {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(37, 99, 235, 0.08);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.course-overview-description p {
  margin: 0;
  line-height: 1.6;
}

.course-demo-note {
  margin-top: 1.25rem;
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 198, 120, 0.18), rgba(255, 243, 224, 0.85));
  border: 1px solid rgba(255, 176, 84, 0.4);
  color: #b55604;
  box-shadow: var(--shadow-sm);
  font-size: 0.98rem;
  line-height: 1.5;
}

.course-demo-note strong {
  display: inline-block;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.84rem;
  color: #d45b02;
}

.course-demo-docs-btn {
  margin-left: 0.75rem;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, #ff9f43, #ff6f00);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.course-demo-docs-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.course-demo-modal {
  position: fixed;
  inset: 0;
  z-index: 1050;
}

.course-demo-modal[hidden] {
  display: none;
}

.course-demo-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
}

.course-demo-modal__dialog {
  position: relative;
  max-width: 520px;
  margin: 10vh auto;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.course-demo-modal__dialog h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  color: #1f2555;
}

.course-demo-modal__dialog p {
  margin: 0;
  line-height: 1.5;
  color: #4a4e69;
}

.course-demo-modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  border: none;
  border-radius: var(--radius-md);
  width: 36px;
  height: 36px;
  background: rgba(31, 37, 85, 0.08);
  color: #1f2555;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.course-demo-modal__close svg {
  width: 18px;
  height: 18px;
}

.course-demo-modal__intro {
  margin: 0 0 1rem 0;
  color: #4a516b;
  line-height: 1.5;
}

.demo-dropzone {
  border: 2px dashed rgba(67, 97, 238, 0.4);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: rgba(248, 249, 255, 0.85);
  margin-bottom: 1rem;
  transition: border-color var(--transition), background var(--transition);
}

.demo-dropzone--active {
  border-color: rgba(67, 97, 238, 0.8);
  background: rgba(223, 229, 255, 0.9);
}

.demo-dropzone__inner {
  text-align: center;
  margin-bottom: 0.8rem;
}

.demo-dropzone__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.4rem;
}

.demo-dropzone__browse {
  border: none;
  background: none;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.demo-dropzone__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.demo-dropzone__placeholder {
  width: 100%;
  text-align: center;
  margin: 0;
  color: var(--color-muted);
}

.demo-preview {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(37, 99, 235, 0.2);
  min-width: 200px;
}

.demo-preview-thumb {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #435fef;
  overflow: hidden;
}

.demo-preview-thumb-img {
  width: 100%;
  height: 100%;
  display: block;
  background-size: cover;
  background-position: center;
}

.demo-preview-info {
  flex: 1;
  min-width: 0;
}

.demo-preview-info strong {
  display: block;
  font-size: 0.9rem;
}

.demo-preview-info small {
  color: var(--color-muted);
}

.demo-preview-remove {
  border: none;
  background: rgba(15, 23, 42, 0.08);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.demo-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 0.25rem 0 0.35rem 0;
}

.demo-checkbox {
  display: flex;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: #2a2f45;
}

.demo-checkbox input {
  margin-top: 0.25rem;
}

.demo-checkbox-note {
  margin: 0 0 0.05rem 0;
  font-size: 0.93rem;
  color: #2a2f45;
  line-height: 1.45;
  font-style: italic;
  font-weight: 600;
}

.demo-comment {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0;
  margin-bottom: 1rem;
  color: #2a2f45;
}

.demo-comment textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  resize: none;
  min-height: 44px;
  max-height: 200px;
}

.demo-comment textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.demo-submit {
  width: 100%;
  justify-content: center;
}

.demo-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: var(--shadow-sm);
}
body.modal-open {
  overflow: hidden;
}

.course-demo-docs {
  margin-top: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 176, 84, 0.5);
  background: rgba(255, 247, 237, 0.9);
  color: #854c00;
  padding: 0.9rem 1rem;
}

.course-demo-docs summary {
  cursor: pointer;
  font-weight: 600;
  color: #b55604;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  outline: none;
}

.course-demo-docs summary span:last-child {
  font-size: 1.2rem;
  transition: transform 0.2s ease;
}

.course-demo-docs[open] summary span:last-child {
  transform: rotate(90deg);
}

.course-demo-docs summary::marker {
  color: #b55604;
}

.course-demo-docs[open] summary {
  margin-bottom: 0.5rem;
}

.course-demo-docs ol {
  margin: 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.course-demo-docs li {
  line-height: 1.5;
}

.course-demo-docs-footer {
  margin-top: 0.9rem;
  display: flex;
  justify-content: flex-start;
}

.course-messages {
  padding: 2rem 0 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.course-messages-header .back-link {
  margin-bottom: 0.5rem;
}

.course-messages-header h1 {
  margin: 0 0 0.5rem;
}

.message-thread {
  margin-top: 0.5rem;
}

.message-form-wrapper {
  margin-top: 1rem;
}

.message-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.message-label {
  font-weight: 600;
  color: rgba(21, 32, 48, 0.85);
}

.message-form textarea {
  width: 100%;
  min-height: 160px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(21, 32, 48, 0.2);
  padding: 1rem;
  font-size: 1rem;
  resize: vertical;
}

.message-form textarea:focus {
  border-color: rgba(63, 130, 244, 0.7);
  outline: none;
  box-shadow: var(--shadow-sm);
}

.message-form-footer {
  margin-top: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.course-group-switch-btn {
  margin: 1.5rem 0 1.25rem;
}

.group-switch-modal .sample-modal-dialog {
  max-width: 560px;
  padding: 1.5rem;
}

.group-switch-header {
  margin-bottom: 1rem;
}

.group-switch-title {
  margin: 0;
  font-weight: 600;
  font-size: 1.1rem;
}

.group-switch-subtitle {
  margin: 0.35rem 0 0;
  color: rgba(21, 32, 48, 0.7);
  font-size: 0.9rem;
}

.group-switch-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin: 0 0 0.75rem;
  max-height: 360px;
  overflow-y: auto;
  padding-right: 0.4rem;
}

.group-switch-item {
  border: 1px solid rgba(91, 118, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  background: #f5f7ff;
  box-shadow: var(--shadow-sm);
}

.group-switch-item.is-current {
  border-color: rgba(91, 118, 255, 0.6);
  background: linear-gradient(135deg, rgba(91, 118, 255, 0.12), rgba(255, 255, 255, 0.8));
}

.group-switch-name {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}

.group-switch-current {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #5b76ff;
}

.group-switch-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: rgba(21, 32, 48, 0.75);
}

.group-switch-price {
  margin: 0.4rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  font-size: 0.9rem;
  color: rgba(21, 32, 48, 0.85);
}

.group-switch-price-value {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.group-switch-price-note {
  font-size: 0.78rem;
  color: rgba(21, 32, 48, 0.6);
}

.group-switch-price-value strong {
  font-size: 1rem;
}

.group-switch-price-diff {
  font-size: 0.85rem;
  font-weight: 700;
}

.group-switch-price-diff.positive {
  color: #059669;
}

.group-switch-price-diff.negative {
  color: #dc2626;
}

.group-switch-extra {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-top: 0.4rem;
  font-size: 0.88rem;
  color: rgba(21, 32, 48, 0.78);
}

.group-switch-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-md);
  background: rgba(91, 118, 255, 0.1);
  border: 1px solid rgba(91, 118, 255, 0.25);
  color: #3841a5;
  font-size: 0.82rem;
}

.group-switch-actions {
  margin-top: 0.6rem;
}

.group-switch-actions .btn {
  width: 100%;
}

/* ── Welcome overlay (demo courses) ── */

.welcome-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.welcome-overlay.visible {
  opacity: 1;
}

.welcome-card {
  background: #fff;
  border-radius: 18px;
  max-width: 520px;
  width: 92%;
  padding: 44px 38px 36px;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  transform: translateY(24px) scale(0.97);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}

.welcome-overlay.visible .welcome-card {
  transform: translateY(0) scale(1);
}

.welcome-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #a78bfa);
}

.welcome-brand {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6366f1;
  margin-bottom: 10px;
}

.welcome-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: #1e293b;
  line-height: 1.3;
  margin: 0 0 8px;
}

.welcome-group {
  font-size: 0.92rem;
  color: #64748b;
  margin: 0 0 4px;
}

.welcome-group-note {
  font-size: 0.8rem;
  color: #94a3b8;
  margin: 0 0 22px;
  font-style: italic;
}

.welcome-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  text-align: left;
}

.welcome-bullets li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 1rem;
  color: #334155;
  border-bottom: 1px solid #f1f5f9;
}

.welcome-bullets li:last-child {
  border-bottom: none;
}

.welcome-bullet-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.welcome-start-btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.welcome-start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.welcome-start-btn:active {
  transform: translateY(0);
}

.welcome-hint {
  font-size: 0.8rem;
  color: #94a3b8;
  margin: 18px 0 0;
}

/* ── Tour ── */

.tour-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(15, 23, 42, 0.55);
  transition: opacity 0.3s;
  opacity: 0;
  pointer-events: none;
}

.tour-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.tour-highlight {
  position: absolute;
  z-index: 9999;
  border-radius: 10px;
  box-shadow: 0 0 0 4000px rgba(15, 23, 42, 0.55), 0 0 0 3px #6366f1;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.tour-tooltip {
  position: absolute;
  z-index: 10001;
  background: #fff;
  border-radius: 12px;
  padding: 18px 22px 16px;
  max-width: 340px;
  width: max-content;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
  transform: scale(0.95);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.tour-tooltip.visible {
  transform: scale(1);
  opacity: 1;
}

.tour-tooltip::before {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  transform: rotate(45deg);
  box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.06);
}

.tour-tooltip.arrow-top::before {
  bottom: -6px;
  left: 28px;
}

.tour-tooltip.arrow-bottom::before {
  top: -6px;
  left: 28px;
}

.tour-text {
  font-size: 0.95rem;
  color: #1e293b;
  line-height: 1.45;
  margin: 0 0 14px;
}

.tour-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.tour-step-indicator {
  font-size: 0.78rem;
  color: #94a3b8;
}

.tour-btns {
  display: flex;
  gap: 8px;
}

.tour-btn {
  padding: 7px 18px;
  font-size: 0.88rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.15s, transform 0.1s;
}

.tour-btn-skip {
  background: #f1f5f9;
  color: #64748b;
}

.tour-btn-skip:hover {
  background: #e2e8f0;
}

.tour-btn-next {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.tour-btn-next:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.demo-price-card {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: row;
  gap: 1rem;
}

.demo-price-column {
  flex: 1 1 0;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, rgba(80, 133, 255, 0.12), rgba(255, 255, 255, 0.9));
  border: 1px solid rgba(80, 133, 255, 0.25);
  box-shadow: var(--shadow-sm);
  min-width: 260px;
}

.demo-price-column + .demo-price-column {
  background: linear-gradient(135deg, rgba(80, 133, 255, 0.12), rgba(255, 255, 255, 0.9));
}

.demo-price-column h3,
.demo-price-column h4 {
  margin: 0 0 0.35rem;
  color: #1d2a6b;
}

.demo-price-note {
  margin: 0 0 0.75rem;
  color: rgba(21, 32, 48, 0.75);
}

.demo-price-highlight {
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  background: rgba(91, 118, 255, 0.12);
  border: 1px solid rgba(91, 118, 255, 0.3);
}

.demo-price-label {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(21, 32, 48, 0.65);
}

.demo-price-value {
  margin: 0.2rem 0 0;
  font-size: 1.3rem;
  font-weight: 700;
  color: #2633a6;
}

.demo-price-saving {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
  color: #057a55;
  font-weight: 600;
}

.group-switch-hint {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: rgba(21, 32, 48, 0.6);
}

.course-sections {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.course-sections h2 {
  margin: 0;
}

.section-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}


.section-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.section-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.3);
}

.section-position {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-type-badge {
  align-self: flex-start;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.section-card h3 {
  margin: 0.25rem 0 1rem;
  line-height: 1.35;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
}

.section-card-locked {
  opacity: 0.65;
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  box-shadow: none;
}
.section-card-locked:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-border);
}

.section-locked-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(100, 116, 139, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-size: 0.95rem;
}
.section-locked-hint::before {
  content: '🔒';
  font-size: 1.1rem;
}


.section-resources {
  margin-top: 0.85rem;
  display: grid;
  gap: 1rem;
}

.resource-group h4 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}


.resource-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.resource-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.resource-list li:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.resource-list-compact li {
  padding: 0.6rem 1rem;
}

.resource-list.resource-list-tests .test-item {
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.resource-list.resource-list-tests .test-item-neutral {
  background: var(--color-surface);
  border-left: 4px solid var(--color-primary);
}

.resource-list.resource-list-tests .test-item-pass {
  background: rgba(56, 189, 248, 0.05);
  border-left: 4px solid var(--color-accent);
}

.resource-list.resource-list-tests .test-item-fail {
  background: rgba(220, 38, 38, 0.05);
  border-left: 4px solid #dc2626;
}

.test-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.test-status-pill.pill-pass {
  background: rgba(56, 189, 248, 0.15);
  color: var(--color-accent);
}

.test-status-pill.pill-fail {
  background: rgba(220, 38, 38, 0.15);
  color: #dc2626;
}

.test-status-pill.pill-neutral {
  background: rgba(37, 99, 235, 0.15);
  color: var(--color-primary);
}

.resource-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.resource-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 1.05rem;
}

.resource-meta {
  font-size: 0.9rem;
  color: var(--color-muted);
}


.progress-red {
  color: #c62828;
  font-weight: 600;
}

.progress-yellow {
  color: #f9a825;
  font-weight: 600;
}

.progress-green {
  color: #2e7d32;
  font-weight: 600;
}

.resource-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.resource-status {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.resource-status-warning {
  color: #b45309;
  font-weight: 600;
}

.btn-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  padding: 0.15rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.btn-link:hover {
  color: var(--color-primary-dark);
  border-color: currentColor;
}

.pdf-viewer-body {
  margin: 0;
  background: var(--color-bg);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


.pdf-viewer-body {
  background: #111827; /* Dark distraction-free background */
  color: #f3f4f6;
  min-height: 100vh;
}

.file-viewer {
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 100%;
}

.file-viewer-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding: 1rem 2rem;
  background: #1f2937;
  border-bottom: 1px solid #374151;
  color: #f3f4f6;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  z-index: 10;
}

.file-viewer-header h1 {
  flex: 1 1 auto;
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: #f3f4f6;
}

.file-viewer-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1 1 320px;
  min-width: 280px;
}

.file-viewer-toolbar {
  display: flex;
  flex: 1 1 320px;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem 1rem;
  flex-wrap: wrap;
}

.file-viewer-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #374151;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
}

.file-viewer-actions .btn {
  background: transparent;
  color: #f3f4f6;
  border: none;
  min-width: 36px;
  padding: 0.4rem 0.6rem;
}
.file-viewer-actions .btn:hover {
  background: #4b5563;
  color: #fff;
}

.viewer-chip {
  background: transparent;
  color: #9ca3af;
  font-size: 0.9rem;
  padding: 0 0.5rem;
  font-weight: 500;
}

.pdf-viewer-frame-wrapper {
  flex-grow: 1;
  position: relative;
  border-radius: 0;
  overflow: auto;
  background: #111827;
}

.pdfViewerContainer {
  position: absolute;
  inset: 0;
  overflow: auto;
}

.pdf-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: #9ca3af;
  font-size: 0.95rem;
  z-index: 5;
}

.pdf-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #374151;
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: pdfSpin 0.8s linear infinite;
}

@keyframes pdfSpin {
  to { transform: rotate(360deg); }
}

.pdf-loading.hidden {
  display: none;
}


.pdf-limit-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.55);
  z-index: 2;
}

.pdf-limit-overlay[hidden] {
  display: none;
}

.pdf-limit-overlay-card {
  max-width: 420px;
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.pdf-limit-overlay-card p {
  margin: 0.75rem 0 1rem;
  color: rgba(21, 32, 48, 0.85);
}

.pdf-limit-overlay-card .pdf-limit-btn {
  align-self: center;
  margin-top: 0.2rem;
}

.pdf-viewer-body,
.pdf-viewer-body * {
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.pdf-viewer-body .textLayer,
.pdf-viewer-body .textLayer span,
.pdf-viewer-body .textLayer div {
  pointer-events: none !important;
  -webkit-user-select: none !important;
  user-select: none !important;
}

.viewer-scale,
.viewer-page {
  font-weight: 600;
}

.pdf-error {
  padding: 2rem;
  text-align: center;
  color: var(--color-muted);
}

.status-page {
  padding: 6rem 0;
  text-align: center;
}

.status-page h1 {
  font-size: 2.4rem;
  margin-bottom: 1rem;
}

.status-page p {
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.status-caption {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 0.9rem 0;
  margin-top: 2rem;
}

.footer-content {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .brand {
    font-size: 1rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .course-grid {
    grid-template-columns: 1fr;
  }

  .course-overview {
    padding: 2.5rem 0 3rem;
  }

  .course-overview-actions {
    width: 100%;
  }

  .course-overview-actions .btn {
    width: 100%;
  }

  .course-empty-card {
    padding: 2rem 1.5rem;
  }

  .file-viewer {
    padding: 1.5rem 0 2rem;
  }

  .file-viewer-header {
    align-items: flex-start;
  }

  .file-viewer-actions {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .file-viewer-left {
    flex-direction: column;
    align-items: flex-start;
    min-width: 100%;
  }

  .file-viewer-toolbar {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .file-viewer-return {
    width: 100%;
    text-align: center;
  }

  .pdf-viewer-frame-wrapper {
    height: calc(100vh - 260px);
  }

  .site-footer {
    margin-top: 3rem;
  }
}

 .locked-sections-note {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(220, 85, 63, 0.3);
  background: rgba(220, 85, 63, 0.08);
}

.locked-sections-note ul {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--color-text);
  line-height: 1.5;
}

/* Course groups and access */
.course-group-strip {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.course-group-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.course-group-badge {
  background: rgba(67, 97, 238, 0.12);
  color: var(--color-primary);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
}

.section-card-locked {
  border-color: rgba(220, 85, 63, 0.35);
  box-shadow: var(--shadow-sm);
}

.section-locked-hint {
  margin: 0.75rem 0;
  background: rgba(220, 85, 63, 0.12);
  color: #7c1d16;
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
}

.resource-group-disabled {
  opacity: 0.6;
}
}
.test-attempt,
.test-result {
  padding: 2rem 0;
}

.test-attempt-header,
.test-result-header {
  margin-bottom: 1.5rem;
}

.back-link a {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.test-form,
.test-result-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.test-question,
.test-result-question {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  border: 1px solid rgba(32, 33, 36, 0.08);
}

.test-attempt-toolbar {
  position: sticky;
  top: 64px;
  z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(32, 33, 36, 0.08);
  padding: 0.85rem 0;
}

.test-attempt-toolbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.test-attempt-toolbar-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.test-attempt-toolbar-info strong {
  font-size: 1rem;
  color: var(--color-text);
}

.test-attempt-footer {
  position: sticky;
  bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  background: var(--color-surface);
  border: 1px solid rgba(32, 33, 36, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 1.5rem;
}

.footer-progress {
  font-weight: 600;
  color: var(--color-text);
}

.footer-progress-count {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin: 0 0.25rem;
}

.test-submit-btn {
  min-width: 210px;
  text-align: center;
}

@media (max-width: 720px) {
  .test-attempt-toolbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .test-attempt-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .test-submit-btn {
    width: 100%;
  }
}

.test-question header,
.test-result-question header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.question-text {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.answer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.answer-option {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
  color: var(--color-text);
}

.answer-option span {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  line-height: 1.4;
}

.answer-option input[type='radio'] {
  margin-top: 0.1rem;
}

.question-text .MathJax_Display,
.test-result-question .question-text .MathJax_Display,
.answer-option .MathJax_Display,
.test-result-question .answer-option .MathJax_Display {
  display: inline-block !important;
  margin: 0 0.25rem !important;
  vertical-align: middle;
  text-align: left !important;
}

.answer-list.readonly .answer-option {
  padding: 0.65rem;
  border-radius: var(--radius-md);
  background: rgba(32, 33, 36, 0.03);
}

.answer-list.readonly .answer-option.answer-correct {
  background: rgba(46, 125, 50, 0.1);
  color: #1b5e20;
}

.answer-list.readonly .answer-option.answer-selected:not(.answer-correct) {
  background: rgba(220, 85, 63, 0.12);
  color: #7c1d16;
}

.answer-list.readonly .answer-empty {
  font-size: 0.95rem;
  color: var(--color-muted);
  background: transparent;
  padding-left: 0;
}

.test-submit {
  text-align: right;
}

.test-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.test-summary > div {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  border: 1px solid rgba(32, 33, 36, 0.08);
}

.summary-status-card {
  position: relative;
}

.summary-helper {
  margin: 0.15rem 0 0.35rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.summary-status-card.summary-pass {
  background: rgba(46, 125, 50, 0.12);
  border-color: rgba(46, 125, 50, 0.3);
}

.summary-status-card.summary-fail {
  background: rgba(220, 85, 63, 0.12);
  border-color: rgba(220, 85, 63, 0.3);
}

.summary-status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.85rem;
}

.summary-status-pill.pill-pass {
  background: rgba(46, 125, 50, 0.2);
  color: #1b5e20;
}

.summary-status-pill.pill-fail {
  background: rgba(220, 85, 63, 0.2);
  color: #7c1d16;
}

.summary-label {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.summary-value {
  margin: 0.35rem 0 0;
  font-size: 1.35rem;
  font-weight: 600;
}

.test-result-question.is-correct {
  border-color: rgba(46, 125, 50, 0.4);
}

.test-result-question.is-wrong {
  border-color: rgba(220, 85, 63, 0.3);
}

.admin-action-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

@media (max-width: 720px) {
  .admin-action-grid { grid-template-columns: 1fr; }
}

.admin-input-label {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
}

.admin-long-btn {
  width: 100%;
  justify-content: center;
}

/* ── Кнопка "Редактирование курсов" ── */
.admin-courses-toggle-wrap {
  margin-bottom: 0.25rem;
}
.admin-courses-toggle-btn {
  font-size: 1.05rem;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  transition: transform 0.18s, box-shadow 0.18s, background 0.2s;
}
.admin-courses-toggle-btn.active {
  background: linear-gradient(135deg, #3949ab, #5c6bc0);
  box-shadow: var(--shadow-sm);
}

/* ── Панель курсов ── */
.admin-courses-panel {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid rgba(67, 97, 238, 0.14);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  animation: adminCoursesSlide 0.25s ease;
}
@keyframes adminCoursesSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.admin-courses-toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.admin-courses-search {
  flex: 1;
  min-width: 200px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.55rem 1rem;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.admin-courses-search:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  outline: none;
}
.admin-courses-stats {
  font-size: 0.85rem;
  color: var(--color-muted);
  white-space: nowrap;
}

/* ── Таблица курсов ── */
.admin-courses-table-wrap {
  overflow-x: auto;
}
.admin-courses-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.admin-courses-table th,
.admin-courses-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.admin-courses-table th {
  background: #f8f9fb;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-muted);
  position: sticky;
  top: 0;
}
.admin-courses-table th.sortable {
  cursor: pointer;
  user-select: none;
  transition: color 0.15s;
}
.admin-courses-table th.sortable:hover {
  color: var(--color-primary);
}
.admin-courses-table th.sorted {
  color: var(--color-primary);
}
.admin-courses-table .sort-icon {
  font-size: 0.7rem;
}
.admin-courses-table tbody tr {
  transition: background 0.12s;
}
.admin-courses-table tbody tr:hover {
  background: rgba(67, 97, 238, 0.04);
}
.admin-courses-title {
  font-weight: 600;
  color: var(--color-text);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.admin-courses-date {
  white-space: nowrap;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.text-center {
  text-align: center !important;
}

/* ── Loading / Empty ── */
.admin-courses-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2.5rem 1rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}
.admin-courses-spinner {
  width: 22px;
  height: 22px;
  border: 3px solid rgba(37, 99, 235, 0.2);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-md);
  animation: adminSpin 0.7s linear infinite;
}
@keyframes adminSpin {
  to { transform: rotate(360deg); }
}
.admin-courses-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* ── Expandable rows ── */
.admin-courses-table tbody tr.expandable {
  cursor: pointer;
}
.admin-courses-table tbody tr.expandable:hover {
  background: rgba(67, 97, 238, 0.06);
}
.admin-courses-table tbody tr.expanded {
  background: rgba(37, 99, 235, 0.08) !important;
}
.expand-arrow {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-primary);
  margin-left: 0.35rem;
  transition: transform 0.2s;
}
tr.expanded .expand-arrow {
  transform: rotate(90deg);
}

/* detail row */
.detail-row td {
  padding: 0 !important;
  border-bottom: 1px solid rgba(67, 97, 238, 0.10);
}
.detail-content {
  padding: 0.75rem 1.25rem 1rem 2.5rem;
  animation: detailSlide 0.2s ease;
}
@keyframes detailSlide {
  from { opacity: 0; max-height: 0; }
  to   { opacity: 1; max-height: 500px; }
}
.detail-header {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-primary);
  margin-bottom: 0.45rem;
}
.detail-files {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.detail-files li {
  font-size: 0.88rem;
  color: var(--color-text);
  padding: 0.2rem 0;
}
.detail-ftype {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--color-muted);
  background: rgba(0,0,0,0.04);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-md);
  margin-left: 0.3rem;
}
.detail-empty {
  font-size: 0.88rem;
  color: var(--color-muted);
  font-style: italic;
}

/* ── Pending Legal Files (new courses) ── */
.pending-files-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.pending-file-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  transition: background 0.15s;
}
.pending-file-item:hover {
  background: rgba(0,0,0,0.03);
}
.pending-file-num {
  color: var(--color-muted);
  min-width: 1.5rem;
  flex-shrink: 0;
}
.pending-file-title {
  flex: 1 1 auto;
  color: var(--color-text);
}
.pending-file-actions {
  display: flex;
  gap: 0.2rem;
  flex-shrink: 0;
}
.pending-btn {
  border: 1px solid #ddd;
  background: #fff;
  border-radius: var(--radius-md);
  width: 26px;
  height: 26px;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.pending-btn:hover:not(:disabled) {
  background: #f0f4ff;
  border-color: var(--color-primary);
}
.pending-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.pending-btn-remove:hover:not(:disabled) {
  background: #fff0f0;
  border-color: #c62828;
  color: #c62828;
}
.pending-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.pending-save-status {
  font-size: 0.85rem;
  margin-left: 0.25rem;
}
.pending-add-btn,
.pending-save-btn {
  font-size: 0.85rem !important;
  padding: 0.35rem 0.85rem !important;
}
/* catalog modal items */
.legal-catalog-item {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.legal-catalog-item:hover {
  background: #f0f4ff;
}
.legal-catalog-item.already-added {
  opacity: 0.45;
  cursor: default;
}
.legal-catalog-item .catalog-item-title {
  flex: 1 1 auto;
}
.legal-catalog-item .catalog-add-icon {
  color: var(--color-primary);
  font-weight: bold;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.legal-catalog-item.already-added .catalog-add-icon {
  color: #999;
}
/* ── Pending Legal Files END ── */

/* ── AI Course Modal ── */
.ai-modal-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
}
.ai-modal {
  background: #fff; border-radius: var(--radius-md);
  width: 580px; max-width: 94vw; max-height: 85vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.ai-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem; border-bottom: 1px solid #e5e7eb;
}
.ai-modal-header h2 { margin: 0; font-size: 1.15rem; }
.ai-modal-close {
  background: none; border: none; font-size: 1.6rem;
  cursor: pointer; color: #666; line-height: 1;
}
.ai-modal-close:hover { color: #c62828; }
.ai-modal-body {
  padding: 1rem 1.25rem; flex: 1 1 auto; overflow-y: auto;
}
.ai-modal-body .admin-courses-search {
  width: 100%; margin-bottom: .75rem;
}
.ai-modal-list-wrap {
  min-height: 180px;
}
.ai-course-list {
  list-style: none; margin: 0; padding: 0;
  max-height: 50vh; overflow-y: auto;
}
.ai-course-item {
  padding: .55rem .75rem; border-radius: var(--radius-md);
  cursor: pointer; font-size: .92rem;
  transition: background .15s;
}
.ai-course-item:hover { background: #f0f4ff; }
.ai-course-item.selected {
  background: #1565c0; color: #fff;
}
.ai-modal-footer {
  padding: .75rem 1.25rem; border-top: 1px solid #e5e7eb;
  text-align: right;
}
.ai-modal-footer .btn:disabled {
  opacity: .45; cursor: not-allowed;
}
/* ── AI Subject list (step 2) ── */
.ai-subject-list {
  list-style: none; margin: 0; padding: 0;
  max-height: 55vh; overflow-y: auto;
}
.ai-subject-item {
  padding: .15rem 0;
}
.ai-subject-label {
  display: flex; align-items: center; gap: .55rem;
  padding: .45rem .65rem; border-radius: var(--radius-md);
  cursor: pointer; font-size: .92rem;
  transition: background .15s;
}
.ai-subject-label:hover { background: #f0f4ff; }
.ai-subject-label input[type=checkbox] {
  width: 18px; height: 18px; flex-shrink: 0;
  accent-color: #1565c0; cursor: pointer;
}
.ai-subject-name { line-height: 1.35; }
.ai-subjects-warning {
  margin-top: .5rem; padding: .5rem .75rem;
  background: #fff3e0; border-radius: var(--radius-md);
  font-size: .88rem; color: #e65100;
}
.ai-process-row {
  display: flex; gap: 1.25rem; margin-bottom: .65rem;
  justify-content: center;
}
.ai-process-label {
  display: flex; align-items: center; gap: .4rem;
  font-size: .88rem; color: #6a1b9a; font-weight: 500;
  cursor: pointer;
}
.ai-process-label input[type=checkbox] {
  width: 17px; height: 17px;
  accent-color: #7b1fa2; cursor: pointer;
}
/* ── AI Course Modal END ── */

/* ── AI Progress Modal ── */
.ai-progress-step {
  margin-bottom: 1rem;
}
.ai-progress-step:last-child { margin-bottom: 0; }
.ai-progress-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.92rem; font-weight: 500; margin-bottom: 0.35rem; color: #374151;
}
.ai-progress-label .step-icon {
  width: 20px; height: 20px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
}
.ai-progress-bar-wrap {
  height: 22px; background: #e5e7eb; border-radius: var(--radius-md); overflow: hidden;
  position: relative;
}
.ai-progress-bar {
  height: 100%; border-radius: var(--radius-md);
  transition: width 0.4s ease, background 0.3s ease;
  min-width: 0;
}
.ai-progress-bar.waiting   { width: 0; background: #d1d5db; }
.ai-progress-bar.running   { background: linear-gradient(90deg, #3b82f6, #60a5fa); animation: ai-progress-pulse 1.5s ease-in-out infinite; }
.ai-progress-bar.done      { width: 100%; background: linear-gradient(90deg, #22c55e, #4ade80); }
.ai-progress-bar.warning   { width: 100%; background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.ai-progress-bar.error     { width: 100%; background: linear-gradient(90deg, #ef4444, #f87171); }
@keyframes ai-progress-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}
.ai-progress-msg {
  font-size: 0.82rem; color: #6b7280; margin-top: 0.25rem;
  min-height: 1.1em;
}
/* ── AI Progress Modal END ── */

/* строки без привязки к LMS */
.admin-courses-table tbody tr.no-lms {
  background: #fff0f0;
}
.admin-courses-table tbody tr.no-lms:hover {
  background: #ffe0e0;
}
a.stu-link { text-decoration: none; cursor: pointer; }
a.stu-link:hover { text-decoration: underline; }

/* короткое название */
.admin-courses-short {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-muted);
  font-size: 0.88rem;
}

/* бейджи включён/выключен */
.badge-on {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(46, 125, 50, 0.12);
  color: #2e7d32;
}
.badge-off {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(198, 40, 40, 0.10);
  color: #c62828;
}
.badge-nolms {
  color: #c62828;
  font-weight: 700;
}

.test-attempt-page,
.test-result-page {
  padding-bottom: 3rem;
}

.sample-modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 1200;
}

.sample-modal.is-visible {
  display: block;
}

.sample-modal[hidden] {
  display: none !important;
}

.sample-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 7, 24, 0.75);
  backdrop-filter: blur(2px);
}

.sample-modal-dialog {
  position: relative;
  max-width: 960px;
  margin: 40px auto;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 1;
}

@media (max-width: 768px) {
  .sample-modal-dialog {
    margin: 20px;
    padding: 20px;
    max-width: calc(100% - 40px);
  }
}

.sample-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: none;
  background: rgba(13, 19, 38, 0.08);
  color: #0b1224;
  font-size: 22px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.sample-modal-close:hover {
  background: rgba(13, 19, 38, 0.15);
}

.sample-modal-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sample-modal-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  color: #0b1224;
}

.sample-modal-group {
  margin: 0;
  color: #5c627a;
  font-size: 14px;
}

.sample-modal-status {
  font-size: 14px;
  color: #2d3352;
  background: rgba(13, 19, 38, 0.05);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.sample-modal-status.is-error {
  color: #b42318;
  background: rgba(180, 35, 24, 0.08);
}

.sample-modal-status[hidden] {
  display: none !important;
}

.sample-modal-viewer {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sample-modal-viewer[hidden] {
  display: none !important;
}

.sample-modal-nav {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, #3452ff, #5c7dff);
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.sample-modal-nav:disabled {
  opacity: 0.4;
  cursor: default;
}

.sample-modal-nav:not(:disabled):hover {
  transform: translateY(-1px);
}

.sample-modal-frame {
  flex: 1;
  min-height: 320px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(13, 19, 38, 0.12);
  background: #f9fafc;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sample-modal-frame img {
  max-height: 60vh;
  width: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  user-select: none;
  pointer-events: none;
}

.sample-modal-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: #2d3352;
}

.sample-modal-label {
  font-weight: 600;
}

.sample-modal-counter {
  color: #5c627a;
}

.nav-contact {
  gap: 0.35rem;
  font-weight: 600;
  color: #fff;
}

.nav-contact:hover,
.nav-contact:focus {
  color: #fff;
}

.nav-contact-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.course-diagram {
  margin: 0;
  border: 1px solid rgba(21, 32, 48, 0.08);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 1rem 1.25rem;
}

.course-diagram summary {
  cursor: pointer;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  border: 1px dashed rgba(91, 118, 255, 0.4);
  background: rgba(240, 244, 255, 0.95);
  font-weight: 600;
  font-size: 1rem;
  margin: 0;
  outline: none;
  list-style: none;
}

.course-diagram summary::-webkit-details-marker,
.course-diagram summary::marker {
  display: none;
}

.course-diagram-summary-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  color: #1f2670;
}

.course-diagram-summary-text span {
  display: block;
}

.course-diagram-summary-text small {
  display: block;
  font-size: 0.85rem;
  color: rgba(31, 38, 112, 0.7);
}

.course-diagram-toggle {
  font-size: 1.3rem;
  transition: transform 0.2s ease;
  color: #5b76ff;
}

.course-diagram[open] .course-diagram-toggle {
  transform: rotate(90deg);
}

.course-diagram-body {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.diagram-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.diagram-row-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-weight: 600;
}

.diagram-status {
  font-size: 0.9rem;
  color: rgba(21, 32, 48, 0.6);
}

.diagram-bar span {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  background: #f3f5f9;
  border-radius: var(--radius-md);
  padding: 0.25rem 0.5rem;
  display: inline-block;
}

.diagram-tips h4 {
  margin: 0 0 0.25rem;
}

.diagram-tips ul {
  margin: 0;
  padding-left: 1.2rem;
  color: rgba(21, 32, 48, 0.85);
}

.diagram-generated {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(21, 32, 48, 0.6);
}


.diagram-tree {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  --diagram-padding-left: 3rem;
  padding-left: var(--diagram-padding-left);
  --diagram-line-color: var(--color-primary);
  --diagram-line-thickness: 3px;
  --diagram-line-offset: -32px;
  --diagram-line-center: calc(var(--diagram-padding-left) + var(--diagram-line-offset));
}

.diagram-tree::before {
  content: '';
  position: absolute;
  left: var(--diagram-line-center);
  top: 2rem;
  bottom: 2rem;
  border-left: var(--diagram-line-thickness) dashed var(--diagram-line-color);
  opacity: 0.3;
  z-index: 0;
}

.diagram-root-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  background: white;
  box-shadow: var(--shadow-sm);
  z-index: 1;
}

.diagram-root-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  position: absolute;
  left: calc(var(--diagram-line-offset) - 10px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.diagram-level-lane {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 0.5rem;
  z-index: 1;
}


.diagram-level-lane {
  position: relative;
  padding: 1rem 1.25rem 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(21, 32, 48, 0.07);
  background: #f9fbff;
  box-shadow: var(--shadow-sm);
}

.diagram-level-lane::after {
  content: '';
  position: absolute;
  left: var(--diagram-line-offset);
  top: 24px;
  width: 24px;
  border-top: var(--diagram-line-thickness) solid var(--diagram-line-color);
}

.diagram-level-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.diagram-level-step {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #3f82f4;
  background: rgba(63, 130, 244, 0.12);
  border-radius: var(--radius-md);
  padding: 0.2rem 0.75rem;
}

.diagram-level-name {
  font-weight: 600;
  color: #152030;
}

.diagram-level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}


.diagram-node {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: var(--color-surface);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.diagram-node:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.4);
}

.diagram-node-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 3px solid var(--diagram-line-color);
  position: absolute;
  left: calc(var(--diagram-padding-left) * -1 + var(--diagram-line-center) - 7px);
  top: 1.5rem;
  z-index: 2;
}


.diagram-node-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
}

.diagram-node-order {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: rgba(63, 130, 244, 0.15);
  color: #3f82f4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  flex: 0 0 32px;
  line-height: 1;
  margin-top: 0.1rem;
}

.diagram-node-summary {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(21, 32, 48, 0.75);
}

.diagram-node-deps {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.diagram-node-chips {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.diagram-node-chip {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-md);
  background: rgba(21, 32, 48, 0.08);
  color: #152030;
  font-size: 0.78rem;
  padding: 0.15rem 0.6rem;
}

.diagram-node-chip-free {
  background: rgba(43, 196, 138, 0.15);
  color: #189b66;
}

.diagram-node-chip-warn {
  background: rgba(220, 53, 69, 0.12);
  color: #b3182c;
  border: 1px solid rgba(220, 53, 69, 0.35);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════
   Reload Modal — confirm / progress / result
   ═══════════════════════════════════════════════════════ */
.reload-modal-overlay {
  position: fixed; inset: 0; z-index: 9500;
  background: rgba(15, 23, 42, .52);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .25s;
  pointer-events: none;
}
.reload-modal-overlay.visible {
  opacity: 1; pointer-events: auto;
}
.reload-modal {
  background: #fff; border-radius: var(--radius-md);
  width: 540px; max-width: 94vw;
  box-shadow: var(--shadow-sm);
  transform: translateY(12px) scale(.97);
  transition: transform .25s ease;
  overflow: hidden;
}
.reload-modal-overlay.visible .reload-modal {
  transform: translateY(0) scale(1);
}
.reload-modal-head {
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid #e5e7eb;
  display: flex; align-items: center; gap: .65rem;
}
.reload-modal-head-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; flex-shrink: 0;
}
.reload-modal-head-icon.confirm { background: #fef3c7; color: #d97706; }
.reload-modal-head-icon.progress { background: #dbeafe; color: #2563eb; }
.reload-modal-head-icon.success { background: #dcfce7; color: #16a34a; }
.reload-modal-head-icon.error { background: #fee2e2; color: #dc2626; }
.reload-modal-head h3 { margin: 0; font-size: 1.08rem; font-weight: 600; }
.reload-modal-body { padding: 1rem 1.5rem 1.25rem; }
.reload-modal-body p { margin: 0 0 .6rem; font-size: .93rem; color: #475569; line-height: 1.5; }
.reload-modal-foot {
  padding: .75rem 1.5rem 1.15rem;
  display: flex; gap: .65rem; justify-content: flex-end;
}
.reload-modal-foot .btn { min-width: 110px; }

/* Checkboxes summary */
.reload-targets { margin: .5rem 0 0; display: flex; gap: .75rem; flex-wrap: wrap; }
.reload-target-badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .22rem .7rem; border-radius: var(--radius-md);
  font-size: .82rem; font-weight: 600;
}
.reload-target-badge.modskill { background: #dbeafe; color: #1e40af; }
.reload-target-badge.yaskill  { background: #fef3c7; color: #92400e; }
.reload-target-badge.makpp    { background: #f3e8ff; color: #6b21a8; }

/* Progress bar */
.reload-progress-wrap {
  margin: .85rem 0 .5rem;
}
.reload-progress-track {
  height: 10px; border-radius: var(--radius-md);
  background: #e2e8f0; overflow: hidden;
}
.reload-progress-fill {
  height: 100%; border-radius: var(--radius-md);
  background: linear-gradient(90deg, #4361ee, #4cc9f0);
  width: 0%; transition: width .4s ease;
}
.reload-progress-fill.done      { background: linear-gradient(90deg, #16a34a, #22d3ee); }
.reload-progress-fill.error     { background: linear-gradient(90deg, #ef4444, #f97316); }
.reload-progress-pct {
  margin-top: .35rem; font-size: .8rem; color: #64748b;
  display: flex; justify-content: space-between;
}

/* Steps log */
.reload-steps-log {
  margin: .75rem 0 0; max-height: 195px; overflow-y: auto;
  font-size: .83rem; color: #334155;
  border: 1px solid #e2e8f0; border-radius: var(--radius-md);
  padding: .5rem .65rem;
  background: #f8fafc;
}
.reload-step-line {
  display: flex; align-items: flex-start; gap: .4rem;
  padding: .18rem 0; line-height: 1.45;
}
.reload-step-line .step-badge {
  flex-shrink: 0; font-weight: 600; font-size: .76rem;
  padding: .1rem .45rem; border-radius: var(--radius-md); margin-top: .06rem;
}
.reload-step-line .step-badge.modskill { background: #dbeafe; color: #1e40af; }
.reload-step-line .step-badge.yaskill  { background: #fef3c7; color: #92400e; }
.reload-step-line .step-badge.makpp    { background: #f3e8ff; color: #6b21a8; }
.reload-step-msg { flex: 1; }

/* Result details */
.reload-result-details {
  margin: .75rem 0 0; max-height: 300px; overflow-y: auto;
  white-space: pre-line; font-size: .85rem;
  color: #334155; background: #f8fafc;
  border: 1px solid #e2e8f0; border-radius: var(--radius-md);
  padding: .65rem .8rem; line-height: 1.55;
}

/* ══════════════════════════════════════════════════════════ */
/*  MOBILE RESPONSIVENESS — Student-facing components       */
/* ══════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  /* ── Course header card ── */
  .course-header-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
  }
  .course-header-card-left { width: 100%; }
  .course-header-card-right { width: 100%; min-width: auto; }
  .course-header-btns {
    width: 100%;
    flex-direction: column;
  }
  .course-header-btn {
    width: 100%;
    justify-content: center;
  }

  /* ── Course selection ── */
  .course-selection { padding: 2rem 0 3rem; }
  .course-grid { gap: 1rem; grid-template-columns: 1fr; }
  .course-card { padding: 1.5rem; gap: 1rem; }
  .course-card h2 { font-size: 1.15rem; }

  /* ── Sections & resources ── */
  .course-sections { gap: 1.25rem; }
  .section-list { grid-template-columns: 1fr; gap: 1rem; }
  .section-card { padding: 1.25rem 1.5rem; }
  .section-card h3 { font-size: 1.15rem; }
  .resource-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
  }
  .resource-actions { width: 100%; }
  .resource-actions .btn { flex: 1; }

  /* ── Demo price card — stack columns ── */
  .demo-price-card { flex-direction: column; gap: 0.875rem; }
  .demo-price-column { min-width: auto; padding: 1rem 1.25rem; }

  /* ── Demo docs modal ── */
  .course-demo-modal__dialog {
    max-width: calc(100vw - 2rem);
    margin: 2rem auto;
    padding: 1.5rem;
  }
  .demo-dropzone { padding: 1rem; }
}

@media (max-width: 640px) {
  /* ── Welcome overlay ── */
  .welcome-card {
    padding: 2rem 1.5rem 1.5rem;
    border-radius: 16px;
  }
  .welcome-title { font-size: 1.25rem; }
  .welcome-bullets li { padding: 0.75rem 0; }
  .welcome-bullets { margin: 0 0 1.5rem; }

  /* ── Course card progress ── */
  .course-card-progress {
    flex-direction: column;
    align-items: flex-start;
  }
  .course-card-progress-ring {
    width: 48px;
    height: 48px;
  }

  /* ── Group switch modal ── */
  .group-switch-modal .sample-modal-dialog {
    max-width: calc(100vw - 1.5rem);
    margin: 1.5rem auto;
    padding: 1.25rem;
  }
  .group-switch-list { max-height: 50vh; }
}

/* ══════════════════════════════════════════════════════════════
   Выпускная работа (ВР) — student & tutor
   ══════════════════════════════════════════════════════════════ */

/* ── Student: VR section in course-overview ── */
.gw-section { margin-top: 0.5rem; }

.gw-hint {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin: 0.5rem 0;
}

.gw-upload-form {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.gw-upload-label {
  position: relative;
  cursor: pointer;
}

.gw-upload-label input[type=file] {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.gw-file-chosen {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--color-text);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.65rem;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gw-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.gw-progress[hidden] { display: none !important; }
.gw-file-chosen[hidden] { display: none !important; }

.gw-progress__bar {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: var(--color-border);
  overflow: hidden;
  max-width: 300px;
}

.gw-progress__fill {
  height: 100%;
  width: 0;
  background: var(--color-accent, #38BDF8);
  border-radius: 4px;
  transition: width 0.2s;
}

.gw-progress__text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-muted);
  min-width: 36px;
}

.gw-upload-msg {
  display: block;
  font-size: 0.88rem;
  margin-top: 0.4rem;
}
.gw-upload-msg--ok  { color: #059669; }
.gw-upload-msg--err { color: #dc2626; }

.gw-status-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  background: var(--color-bg);
}

.gw-status-card--submitted { border-left: 4px solid #f59e0b; }
.gw-status-card--graded    { border-left: 4px solid #10b981; }
.gw-status-card--revision  { border-left: 4px solid #ef4444; }

.gw-status-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.gw-status-card__file {
  font-weight: 600;
  word-break: break-all;
}

.gw-status-pill {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.gw-status-pill--submitted { background: rgba(245,158,11,0.15); color: #92400e; }
.gw-status-pill--graded    { background: rgba(16,185,129,0.15); color: #065f46; }
.gw-status-pill--revision  { background: rgba(239,68,68,0.15);  color: #991b1b; }

.gw-status-card__meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 0.35rem;
}

.gw-result {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.gw-result__score {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.gw-result__label {
  font-size: 0.88rem;
  color: var(--color-muted);
}

.gw-result__value {
  font-size: 1.1rem;
}

.gw-result__value--high { color: #059669; }
.gw-result__value--mid  { color: #d97706; }
.gw-result__value--low  { color: #dc2626; }

.gw-result__comment {
  margin-top: 0.5rem;
}

.gw-result__comment p {
  margin: 0.25rem 0 0;
  white-space: pre-wrap;
}

.gw-result__date {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-muted);
}

/* ── Tutor: graduation works list ── */
.manager-gw { padding: 1.5rem 0; }

.manager-gw__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.gw-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.gw-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: var(--color-bg);
}

.gw-card--pending { border-left: 4px solid #f59e0b; }
.gw-card--revision { border-left: 4px solid #ef4444; }
.gw-card--graded { border-left: 4px solid #10b981; }

.gw-card__info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.gw-card__file {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.gw-card__filename {
  font-weight: 500;
  word-break: break-all;
}

.gw-card__date {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}

.gw-card__meta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
}

.gw-card__comment {
  font-size: 0.9rem;
  color: var(--color-muted);
  white-space: pre-wrap;
  margin: 0.25rem 0 0.5rem;
}

.gw-score--high { color: #059669; }
.gw-score--mid  { color: #d97706; }
.gw-score--low  { color: #dc2626; }

.gw-grade-form {
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
  margin-top: 0.5rem;
}

.gw-grade-form__row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.gw-grade-input {
  width: 80px;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.gw-grade-select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.gw-grade-comment {
  width: 100%;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  resize: vertical;
  margin-bottom: 0.5rem;
}

.gw-grade-form label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.gw-grade-form__msg {
  font-size: 0.85rem;
  margin-left: 0.5rem;
}
.gw-grade-form__msg--ok  { color: #059669; }
.gw-grade-form__msg--err { color: #dc2626; }

.gw-grade-form__status-label { min-width: 140px; }

@media (max-width: 640px) {
  .gw-upload-form { flex-direction: column; align-items: flex-start; }
  .gw-grade-form__row { flex-direction: column; }
  .gw-card__info { flex-direction: column; align-items: flex-start; }
  .gw-card__file { flex-direction: column; align-items: flex-start; }
}