:root {
  color-scheme: light;
  --font-sans: "Manrope", "Aptos", "Segoe UI Variable", "Segoe UI", sans-serif;
  --font-serif: "Cormorant Garamond", "Georgia", serif;
  --max-page: 1180px;
  --max-narrow: 760px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 2.5rem;
  --space-9: 3rem;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-soft: 0 14px 34px rgba(15, 23, 42, 0.07);
  --shadow-card: 0 10px 24px rgba(15, 23, 42, 0.07);
  --shadow-press: 0 6px 16px rgba(15, 23, 42, 0.1);
  --theme-bg: #f4f1ea;
  --theme-bg-secondary: #fbf8f3;
  --theme-surface: rgba(255, 255, 255, 0.82);
  --theme-card: #fffdfa;
  --theme-elevated: #ffffff;
  --theme-text: #161618;
  --theme-text-soft: #5e616a;
  --theme-border: rgba(112, 105, 92, 0.18);
  --theme-border-strong: rgba(112, 105, 92, 0.28);
  --theme-accent: #183a63;
  --theme-accent-strong: #0c2442;
  --theme-accent-soft: rgba(24, 58, 99, 0.1);
  --theme-gold: #a27a2c;
  --theme-gold-soft: rgba(162, 122, 44, 0.14);
  --theme-success: #146c43;
  --theme-success-soft: rgba(20, 108, 67, 0.12);
  --theme-warning: #9a6700;
  --theme-warning-soft: rgba(154, 103, 0, 0.14);
  --theme-danger: #b42318;
  --theme-danger-soft: rgba(180, 35, 24, 0.1);
  --theme-info: #1d4ed8;
  --theme-info-soft: rgba(29, 78, 216, 0.1);
  --theme-input-bg: rgba(255, 255, 255, 0.86);
  --theme-input-text: #161618;
  --theme-table-stripe: rgba(251, 248, 243, 0.92);
}

:root[data-theme="dark"],
body.theme-dark {
  color-scheme: dark;
  --theme-bg: #09111d;
  --theme-bg-secondary: #0e1727;
  --theme-surface: rgba(12, 18, 30, 0.8);
  --theme-card: #101826;
  --theme-elevated: #162132;
  --theme-text: #eef2f7;
  --theme-text-soft: #98a4b8;
  --theme-border: rgba(153, 171, 194, 0.18);
  --theme-border-strong: rgba(153, 171, 194, 0.28);
  --theme-accent: #8ab4ff;
  --theme-accent-strong: #c9ddff;
  --theme-accent-soft: rgba(138, 180, 255, 0.16);
  --theme-gold: #d7b36b;
  --theme-gold-soft: rgba(215, 179, 107, 0.16);
  --theme-success: #61c99b;
  --theme-success-soft: rgba(97, 201, 155, 0.16);
  --theme-warning: #e7c15f;
  --theme-warning-soft: rgba(231, 193, 95, 0.16);
  --theme-danger: #ff8d82;
  --theme-danger-soft: rgba(255, 141, 130, 0.16);
  --theme-info: #97b8ff;
  --theme-info-soft: rgba(151, 184, 255, 0.16);
  --theme-input-bg: rgba(16, 24, 38, 0.88);
  --theme-input-text: #eef2f7;
  --theme-table-stripe: rgba(17, 25, 40, 0.92);
  --shadow-soft: 0 18px 42px rgba(0, 0, 0, 0.28);
  --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.26);
  --shadow-press: 0 8px 18px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scrollbar-gutter: stable both-edges;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--theme-text);
  background:
    radial-gradient(circle at top left, rgba(162, 122, 44, 0.1), transparent 28%),
    radial-gradient(circle at top right, rgba(24, 58, 99, 0.1), transparent 30%),
    linear-gradient(180deg, var(--theme-bg-secondary) 0%, var(--theme-bg) 100%);
  letter-spacing: -0.01em;
}

body.theme-light,
body.theme-dark {
  color: var(--theme-text);
}

.lms-body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.lms-body > main {
  flex: 1 0 auto;
}

a[href] {
  color: var(--theme-accent);
  text-decoration: none;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease,
    opacity 180ms ease,
    box-shadow 180ms ease;
}

a[href]:focus-visible {
  outline: none;
  color: var(--theme-accent-strong);
  text-decoration: underline;
  border-radius: 6px;
  box-shadow: 0 0 0 3px rgba(24, 58, 99, 0.12);
}

body.theme-dark a[href]:focus-visible {
  box-shadow: 0 0 0 3px rgba(138, 180, 255, 0.18);
}

@media (hover: hover) {
  a[href]:hover {
    color: var(--theme-accent-strong);
    text-decoration: underline;
  }

  a.button:hover,
  .nav-links a:hover,
  .back-link:hover,
  .quick-link:hover {
    text-decoration: none;
  }
}

a.button.is-disabled,
[data-live-session-join].is-disabled {
  pointer-events: none;
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

main,
.page,
.auth-shell,
.page-shell {
  position: relative;
}

.page,
.page-shell {
  width: min(var(--max-page), calc(100% - 2rem));
  margin: 0 auto;
  padding: var(--space-8) 0 var(--space-9);
}

.page.page-narrow {
  width: min(var(--max-narrow), calc(100% - 2rem));
}

.surface {
  background: var(--theme-surface);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-7);
}

.page-eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--theme-gold);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  font-weight: 700;
}

.page-header h1,
.page-title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.15rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.page-subtitle,
.muted {
  color: var(--theme-text-soft);
}

.page-header > *,
.hero-panel > *,
.card > *,
.form-card > *,
.section-card > *,
.list-card > * {
  min-width: 0;
}

.page-subtitle {
  max-width: 60ch;
  margin: var(--space-3) 0 0;
  font-size: 1rem;
  line-height: 1.6;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
}

.nav-links,
.button-row,
.actions,
.toolbar,
.split-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.nav-logout-form {
  margin: 0;
  display: inline-flex;
}

.nav-logout-form .button,
.nav-logout-form button {
  width: auto;
}

.nav-links a,
.nav-link {
  padding: 0.78rem 1rem;
  border-radius: var(--radius-pill);
  color: var(--theme-text);
  border: 1px solid transparent;
  background: transparent;
  transition: 180ms ease;
}

.nav-links a:hover,
.nav-link:hover {
  background: var(--theme-accent-soft);
  border-color: var(--theme-border);
  color: var(--theme-accent-strong);
}

.breadcrumb,
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--theme-text-soft);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.back-link:hover,
.breadcrumb:hover {
  color: var(--theme-accent);
}

.hero-panel,
.card,
.form-card,
.table-panel,
.section-card,
.list-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.92));
  background-color: var(--theme-card);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

body.theme-dark .hero-panel,
body.theme-dark .card,
body.theme-dark .form-card,
body.theme-dark .table-panel,
body.theme-dark .section-card,
body.theme-dark .list-card {
  background: linear-gradient(180deg, rgba(25, 35, 53, 0.96), rgba(14, 22, 35, 0.98));
}

.hero-panel,
.card,
.form-card,
.section-card,
.list-card {
  padding: clamp(1.15rem, 2vw, 1.6rem);
}

.card h2,
.card h3,
.form-card h2,
.section-card h2,
.section-card h3,
.list-card h2,
.list-card h3 {
  margin-top: 0;
  margin-bottom: var(--space-3);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.card-grid,
.stats-grid,
.content-grid {
  display: grid;
  gap: var(--space-5);
}

.card-grid,
.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.content-grid.content-grid-wide {
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.95fr);
  align-items: start;
}

.big,
.metric-value {
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.06em;
  margin: var(--space-3) 0;
}

.metric-label {
  color: var(--theme-text-soft);
  font-size: 0.95rem;
}

.split,
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3) var(--space-5);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.label,
.meta-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--theme-text-soft);
}

.value,
.meta-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--theme-text);
}

.button,
button,
input[type="submit"],
input[type="button"] {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 0.84rem 1.1rem;
  font: inherit;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 242, 233, 0.98));
  color: var(--theme-text);
  border-color: var(--theme-border-strong);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

body.theme-dark .button,
body.theme-dark button,
body.theme-dark input[type="submit"],
body.theme-dark input[type="button"] {
  background: linear-gradient(180deg, rgba(21, 30, 46, 1), rgba(14, 21, 33, 1));
}

.button:hover,
button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-press);
  text-decoration: none;
}

.button.primary,
button.primary,
input.primary[type="submit"] {
  background: linear-gradient(135deg, var(--theme-accent-strong), var(--theme-accent));
  color: #fff;
  border-color: rgba(0, 0, 0, 0.08);
}

body.theme-dark .button.primary,
body.theme-dark button.primary,
body.theme-dark input.primary[type="submit"] {
  color: #08111e;
}

.button.secondary,
button.secondary,
input.secondary[type="submit"] {
  background: linear-gradient(135deg, rgba(162, 122, 44, 0.16), rgba(24, 58, 99, 0.1));
  color: var(--theme-text);
  border-color: rgba(162, 122, 44, 0.25);
}

.button.ghost,
button.ghost,
input.ghost[type="submit"] {
  background: transparent;
  border-color: var(--theme-border);
  box-shadow: none;
}

.button.disabled,
.button[aria-disabled="true"],
button.disabled,
button:disabled,
input[type="submit"]:disabled {
  opacity: 0.56;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--theme-text);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--theme-border);
  background: var(--theme-input-bg);
  color: var(--theme-input-text);
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(24, 58, 99, 0.55);
  box-shadow: 0 0 0 4px rgba(24, 58, 99, 0.12);
}

body.theme-dark input:focus,
body.theme-dark select:focus,
body.theme-dark textarea:focus {
  box-shadow: 0 0 0 4px rgba(138, 180, 255, 0.18);
}

.form-stack,
.field-stack {
  display: grid;
  gap: var(--space-4);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.field,
.form-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field-full {
  grid-column: 1 / -1;
}

.help-text {
  color: var(--theme-text-soft);
  font-size: 0.9rem;
  line-height: 1.5;
}

.search-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.search-bar input {
  flex: 1 1 280px;
}

.table-panel,
.table-wrap {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--theme-border);
  box-shadow: var(--shadow-card);
  background: var(--theme-card);
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table,
table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td,
table th,
table td {
  padding: 1rem 1.05rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--theme-border);
}

.table thead th,
table thead th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--theme-text-soft);
  background: rgba(24, 58, 99, 0.05);
}

.table tbody tr:nth-child(even),
table tbody tr:nth-child(even) {
  background: var(--theme-table-stripe);
}

.table tbody tr:hover,
table tbody tr:hover {
  background: rgba(24, 58, 99, 0.06);
}

.flash,
.notice,
.message-box {
  border-radius: var(--radius-md);
  padding: 0.95rem 1rem;
  border: 1px solid transparent;
  margin-bottom: var(--space-5);
}

.flash-success,
.alert-success {
  background: var(--theme-success-soft);
  color: var(--theme-success);
  border-color: rgba(20, 108, 67, 0.2);
}

.flash-info,
.alert-info {
  background: var(--theme-info-soft);
  color: var(--theme-info);
  border-color: rgba(29, 78, 216, 0.2);
}

.flash-error,
.alert-error,
.error {
  background: var(--theme-danger-soft);
  color: var(--theme-danger);
  border-color: rgba(180, 35, 24, 0.2);
}

.flash-warning {
  background: var(--theme-warning-soft);
  color: var(--theme-warning);
  border-color: rgba(154, 103, 0, 0.18);
}

.notice {
  background: linear-gradient(135deg, var(--theme-gold-soft), rgba(24, 58, 99, 0.06));
  border-color: rgba(162, 122, 44, 0.22);
  color: var(--theme-text);
}

.badge,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: var(--radius-pill);
  padding: 0.38rem 0.72rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.badge.ready,
.status-ready,
.badge.success,
.badge.passed,
.badge-enrolled,
.status-badge.submitted {
  background: var(--theme-success-soft);
  color: var(--theme-success);
  border-color: rgba(20, 108, 67, 0.18);
}

.badge.warning,
.badge.pending,
.status-soon {
  background: var(--theme-warning-soft);
  color: var(--theme-warning);
  border-color: rgba(154, 103, 0, 0.18);
}

.badge.info,
.badge.locked {
  background: var(--theme-info-soft);
  color: var(--theme-info);
  border-color: rgba(29, 78, 216, 0.2);
}

.badge.danger,
.badge.failed {
  background: var(--theme-danger-soft);
  color: var(--theme-danger);
  border-color: rgba(180, 35, 24, 0.2);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-7);
}

.auth-card {
  width: min(1080px, 100%);
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(360px, 1fr);
  overflow: hidden;
  border-radius: 32px;
  border: 1px solid var(--theme-border);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(246, 241, 233, 0.86));
  box-shadow: var(--shadow-soft);
}

body.theme-dark .auth-card {
  background: linear-gradient(135deg, rgba(12, 18, 30, 0.98), rgba(18, 27, 42, 0.94));
}

.auth-aside {
  padding: clamp(1.5rem, 4vw, 3rem);
  background:
    radial-gradient(circle at top, rgba(215, 179, 107, 0.24), transparent 34%),
    radial-gradient(circle at bottom left, rgba(24, 58, 99, 0.28), transparent 36%),
    linear-gradient(160deg, rgba(15, 23, 42, 0.98), rgba(24, 58, 99, 0.95));
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-6);
}

.auth-brand-panel {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-6);
}

.auth-brand-lockup {
  display: grid;
  gap: var(--space-4);
}

.auth-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  width: fit-content;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.auth-logo-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 320px);
  padding: 0.9rem 1rem;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(7, 12, 21, 0.74), rgba(14, 22, 37, 0.48));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 44px rgba(4, 10, 20, 0.3);
}

.auth-logo-image {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.22));
}

.auth-kicker {
  margin: 0 0 0.85rem;
  color: rgba(226, 196, 129, 0.92);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.auth-aside h1,
.auth-aside h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.auth-copy {
  color: rgba(255, 255, 255, 0.82);
  max-width: 34ch;
  line-height: 1.65;
}

.auth-copy--lead {
  max-width: 44ch;
}

.auth-copy--support {
  margin: 0;
  max-width: 46ch;
  color: rgba(255, 255, 255, 0.74);
}

.auth-highlights,
.auth-points {
  display: grid;
  gap: var(--space-3);
}

.auth-point {
  display: grid;
  gap: 0.18rem;
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-point strong {
  font-size: 1rem;
}

.auth-point span {
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.6;
}

.auth-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.auth-metric {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 0.95rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-metric strong {
  color: #f5d487;
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.auth-metric span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
  line-height: 1.45;
}

.auth-main {
  padding: clamp(1.5rem, 4vw, 3rem);
}

.auth-socials {
  display: grid;
  gap: var(--space-3);
}

.social-button {
  width: 100%;
  border-color: var(--theme-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 239, 232, 0.96));
}

body.theme-dark .social-button {
  background: linear-gradient(180deg, rgba(19, 28, 42, 1), rgba(12, 19, 31, 1));
}

.auth-divider {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--theme-text-soft);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.auth-divider::before {
  content: "";
  position: absolute;
  inset: 50% 0 auto;
  border-top: 1px solid var(--theme-border);
  transform: translateY(-50%);
}

.auth-divider span {
  position: relative;
  padding: 0 var(--space-3);
  background: linear-gradient(180deg, rgba(251, 248, 243, 0.96), rgba(246, 241, 233, 0.96));
}

body.theme-dark .auth-divider span {
  background: linear-gradient(180deg, rgba(15, 23, 37, 0.98), rgba(18, 27, 42, 0.98));
}

.auth-meta {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.auth-form {
  display: grid;
  gap: var(--space-4);
}

.auth-form button,
.auth-form .button {
  width: 100%;
}

.section-stack {
  display: grid;
  gap: var(--space-5);
}

.list-reset {
  list-style: none;
  margin: 0;
  padding: 0;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.course-card {
  display: grid;
  gap: var(--space-4);
}

.course-card header {
  display: grid;
  gap: var(--space-2);
}

.course-card p {
  margin: 0;
  line-height: 1.65;
  color: var(--theme-text-soft);
  overflow-wrap: anywhere;
}

.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.catalog-page .page {
  width: min(1280px, calc(100% - 2rem));
}

.catalog-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 2.6vw, 2rem);
  background:
    radial-gradient(circle at top right, rgba(162, 122, 44, 0.18), transparent 28%),
    radial-gradient(circle at bottom left, rgba(24, 58, 99, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(250, 246, 239, 0.96));
}

.catalog-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.26) 42%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
}

.catalog-search {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 1.6fr) minmax(200px, 0.9fr) auto;
  gap: var(--space-3);
  align-items: stretch;
}

.catalog-search > * {
  min-width: 0;
}

.catalog-search input,
.catalog-search select,
.catalog-search button {
  min-height: 54px;
}

.catalog-nav {
  padding: 0.75rem;
  gap: 0.6rem;
  backdrop-filter: blur(16px);
}

.catalog-nav a {
  padding: 0.8rem 1rem;
  border: 1px solid rgba(24, 58, 99, 0.08);
  background: rgba(255, 255, 255, 0.58);
  font-weight: 700;
}

.catalog-category {
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border-radius: 30px;
  border: 1px solid rgba(112, 105, 92, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.18));
}

.catalog-category__header {
  align-items: center;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(112, 105, 92, 0.14);
}

.catalog-page .course-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}

.catalog-course-card {
  position: relative;
  height: 100%;
  padding: clamp(1.2rem, 2vw, 1.55rem);
  border-radius: 28px;
  overflow: hidden;
  gap: var(--space-5);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(247, 242, 235, 0.96));
  box-shadow:
    0 14px 34px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.catalog-course-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, rgba(162, 122, 44, 0.88), rgba(24, 58, 99, 0.78));
  opacity: 0.92;
}

.catalog-course-card__header {
  gap: var(--space-3);
}

.catalog-course-card__status {
  gap: 0.55rem;
}

.catalog-course-card h3 {
  margin-bottom: 0;
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.2;
  width: 100%;
  max-width: none;
  overflow-wrap: normal;
  word-break: normal;
}

.catalog-course-card__description {
  max-width: 34ch;
  font-size: 1rem;
  line-height: 1.75;
}

.catalog-course-card__notice {
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: rgba(24, 58, 99, 0.05);
  border: 1px solid rgba(24, 58, 99, 0.08);
}

.catalog-course-actions {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid rgba(112, 105, 92, 0.12);
  display: grid;
  gap: 0.75rem;
}

.catalog-course-actions > * {
  width: 100%;
  min-width: 0;
}

.catalog-course-actions form {
  width: 100%;
}

.catalog-course-actions .button,
.catalog-course-actions button,
.catalog-course-actions input[type="submit"],
.catalog-course-actions input[type="button"] {
  width: 100%;
  min-height: 52px;
  justify-content: center;
  border-radius: 18px;
  font-size: 0.98rem;
  letter-spacing: -0.015em;
}

.catalog-course-actions .button.primary,
.catalog-course-actions button.primary,
.catalog-course-actions input.primary[type="submit"] {
  box-shadow: 0 14px 26px rgba(12, 36, 66, 0.2);
}

.catalog-course-actions .button.ghost,
.catalog-course-actions button.ghost,
.catalog-course-actions input.ghost[type="submit"] {
  background: rgba(255, 255, 255, 0.6);
}

.catalog-course-actions .button.disabled {
  opacity: 1;
  color: var(--theme-text-soft);
  background: linear-gradient(180deg, rgba(245, 241, 234, 0.96), rgba(239, 232, 223, 0.98));
  border-color: rgba(112, 105, 92, 0.16);
}

body.theme-dark .catalog-hero {
  background:
    radial-gradient(circle at top right, rgba(215, 179, 107, 0.16), transparent 28%),
    radial-gradient(circle at bottom left, rgba(138, 180, 255, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(22, 31, 48, 0.96), rgba(13, 20, 32, 0.98));
}

body.theme-dark .catalog-nav a {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(153, 171, 194, 0.16);
}

body.theme-dark .catalog-category {
  background: linear-gradient(180deg, rgba(13, 21, 34, 0.42), rgba(10, 16, 27, 0.22));
  border-color: rgba(153, 171, 194, 0.12);
}

body.theme-dark .catalog-category__header,
body.theme-dark .catalog-course-actions {
  border-color: rgba(153, 171, 194, 0.14);
}

body.theme-dark .catalog-course-card {
  background: linear-gradient(180deg, rgba(21, 30, 46, 0.98), rgba(12, 19, 31, 0.98));
  box-shadow:
    0 16px 36px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

body.theme-dark .catalog-course-card__notice {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(153, 171, 194, 0.14);
}

body.theme-dark .catalog-course-actions .button.ghost,
body.theme-dark .catalog-course-actions button.ghost,
body.theme-dark .catalog-course-actions input.ghost[type="submit"] {
  background: rgba(255, 255, 255, 0.02);
}

.button-row form,
.actions form,
.course-actions form,
.search-bar form {
  margin: 0;
}

.progress {
  width: 100%;
  height: 12px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: rgba(24, 58, 99, 0.12);
  border: 1px solid rgba(24, 58, 99, 0.12);
}

progress {
  width: 100%;
  height: 12px;
  border: 0;
  border-radius: var(--radius-pill);
  overflow: hidden;
}

progress::-webkit-progress-bar {
  background: rgba(24, 58, 99, 0.12);
  border-radius: var(--radius-pill);
}

progress::-webkit-progress-value {
  background: linear-gradient(135deg, var(--theme-gold), var(--theme-accent));
  border-radius: var(--radius-pill);
}

progress::-moz-progress-bar {
  background: linear-gradient(135deg, var(--theme-gold), var(--theme-accent));
  border-radius: var(--radius-pill);
}

@media (pointer: coarse) {
  .nav-links a,
  .nav-link,
  .button,
  button,
  input[type="submit"],
  input[type="button"],
  input,
  select,
  textarea {
    transition-duration: 120ms;
  }

  .button:hover,
  button:hover,
  input[type="submit"]:hover,
  input[type="button"]:hover {
    transform: none;
    box-shadow: var(--shadow-card);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .button:hover,
  button:hover,
  input[type="submit"]:hover,
  input[type="button"]:hover {
    transform: none;
  }
}

.question-card,
.attempt-box,
.answer-review,
.keyword-box,
.adaptive-box {
  border-radius: var(--radius-md);
  border: 1px solid var(--theme-border);
  background: rgba(255, 255, 255, 0.56);
  padding: var(--space-4);
}

body.theme-dark .question-card,
body.theme-dark .attempt-box,
body.theme-dark .answer-review,
body.theme-dark .keyword-box,
body.theme-dark .adaptive-box {
  background: rgba(255, 255, 255, 0.03);
}

.adaptive-box.warning {
  background: var(--theme-warning-soft);
}

.adaptive-box.success {
  background: var(--theme-success-soft);
}

.adaptive-box.info {
  background: var(--theme-info-soft);
}

.keyword-list span {
  display: inline-flex;
  margin: 0.2rem;
}

.certificate-action-bar {
  width: min(var(--max-page), calc(100% - 2rem));
  margin: var(--space-5) auto 0;
  padding: var(--space-4);
}

.certificate-action-bar .actions {
  justify-content: flex-start;
}

.empty-state {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--theme-border-strong);
  color: var(--theme-text-soft);
  background: rgba(255, 255, 255, 0.42);
  overflow-wrap: anywhere;
}

.stack-sm {
  display: grid;
  gap: var(--space-3);
}

.stack-md {
  display: grid;
  gap: var(--space-5);
}

.stack-lg {
  display: grid;
  gap: var(--space-7);
}

.inline-form {
  display: inline;
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.lms-footer {
  flex: 0 0 auto;
  padding: var(--space-6) 1rem;
}

.lms-footer__inner {
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  width: min(var(--max-page), 100%);
  margin: 0 auto;
  padding: 1rem;
  border-top: 1px solid var(--theme-border);
  color: var(--theme-text-soft);
  text-align: center;
}

.developer-credit-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.12rem 0.62rem;
  border-radius: var(--radius-pill);
  color: var(--theme-gold);
  font-weight: 800;
  letter-spacing: 0;
  isolation: isolate;
  transition:
    color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.developer-credit-link::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  border: 1px solid rgba(162, 122, 44, 0.28);
  background:
    linear-gradient(135deg, rgba(162, 122, 44, 0.18), transparent),
    var(--theme-card);
  opacity: 0;
  transform: translateY(0.18rem) scale(0.96);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.developer-credit-link:hover {
  color: var(--theme-accent-strong);
  transform: translateY(-2px);
  text-decoration: none;
  box-shadow: 0 14px 28px rgba(162, 122, 44, 0.18);
}

.developer-credit-link:hover::before {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@media (max-width: 980px) {
  .auth-card,
  .content-grid.content-grid-wide,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .catalog-search {
    grid-template-columns: 1fr;
  }

  .auth-logo-card {
    width: min(100%, 280px);
  }

  .auth-metrics {
    grid-template-columns: 1fr;
  }

  .page,
  .page-shell {
    width: min(var(--max-page), calc(100% - 1.25rem));
    padding-top: var(--space-7);
  }
}

@media (max-width: 720px) {
  .auth-shell {
    padding: var(--space-4);
  }

  .auth-aside,
  .auth-main {
    padding: var(--space-4);
  }

  .auth-logo-card {
    width: min(100%, 240px);
  }

  .page-header {
    gap: var(--space-4);
  }

  .page-header h1,
  .page-title {
    font-size: clamp(1.8rem, 9vw, 2.45rem);
  }

  .card,
  .form-card,
  .section-card,
  .list-card,
  .hero-panel {
    padding: 1rem;
  }

  .nav-links,
  .actions,
  .button-row,
  .course-actions,
  .search-bar {
    width: 100%;
  }

  .search-bar > *,
  .course-actions > *,
  .button-row > *,
  .actions > * {
    width: 100%;
    min-width: 0;
  }

  .catalog-page .page {
    width: min(1280px, calc(100% - 1.25rem));
  }

  .catalog-course-card h3,
  .catalog-course-card__description {
    max-width: none;
  }

  .nav-links a,
  .nav-link,
  .button,
  button,
  input[type="submit"],
  input[type="button"] {
    width: 100%;
  }

  .table th,
  .table td,
  table th,
  table td {
    padding: 0.85rem 0.8rem;
  }
}