/* ==========================================================================
   Learnova LMS — Admin Panel
   Stylesheet utama

   Struktur:
   1. Design tokens (warna, tipografi, spacing, radius, shadow)
   2. Reset & base
   3. Layout (app shell, sidebar, topbar, content, footer)
   4. Komponen dasar (page header, button, card, badge, grid)
   5. Komponen data (stat card, chart, list, table, toolbar, pagination)
   6. Komponen form (field, switch, dropzone, alert)
   7. Komponen course (course card, progress, view toggle)
   8. Overlay (dropdown, modal, toast)
   9. Halaman login
   10. Fitur lanjutan (sortir, tab, user, quiz, profil)
   11. Responsive
   12. Print
   ========================================================================== */

/* 1. DESIGN TOKENS ======================================================== */
:root {
  /* Warna — sesuai Color Palette di PERANCANGAN.md & Figma */
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-soft: #eef2ff;
  --color-primary-dark: #312e81;
  --color-success: #22c55e;
  --color-success-soft: #dcfce7;
  --color-success-text: #16a34a;
  --color-warning: #f59e0b;
  --color-warning-soft: #fef3c7;
  --color-warning-text: #b45309;
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-danger-soft: #fee2e2;

  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-surface-muted: #f3f4f6;
  --color-border: #e5e7eb;

  --color-text: #111827;
  --color-text-body: #374151;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;

  --color-primary-soft-hover: #e0e7ff;
  --color-danger-text: #b91c1c;
  --color-toast: #111827;
  --color-overlay: rgba(17, 24, 39, 0.5);

  /* Warna teks/elemen di atas latar berwarna (tidak berubah di dark mode) */
  --color-on-primary: #ffffff;   /* teks di tombol primary/danger, badge aktif */
  --color-on-dark: #ffffff;      /* teks di toast & caption video */
  --color-on-pastel: #1f2937;    /* teks di atas warna pastel course */
  --color-scrim: rgba(17, 24, 39, 0.7);        /* latar caption di atas video */
  --color-scrim-track: rgba(255, 255, 255, 0.5); /* track progress di atas video */
  --color-art-bg: #f3f4f6;       /* latar terang ilustrasi login di dark mode */

  /* Seri tambahan grafik (seri 1–3 memakai primary, success, warning) */
  --chart-4: #ec4899;
  --chart-5: #0ea5e9;
  --chart-6: #8b5cf6;

  /* Tipografi */
  --font-family: "Inter", "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --fs-2xs: 0.6875rem;  /* 11px — inisial avatar kecil */
  --fs-xs: 0.75rem;     /* 12px — label uppercase, badge */
  --fs-sm: 0.875rem;    /* 14px — teks sekunder, tabel */
  --fs-base: 0.9375rem; /* 15px — body, menu */
  --fs-lg: 1.125rem;    /* 18px — judul card */
  --fs-md: 1.25rem;     /* 20px — teks soal quiz */
  --fs-xl: 1.75rem;     /* 28px — judul halaman */
  --fs-stat: 2.25rem;   /* 36px — angka statistik */

  /* Spacing (kelipatan 4px) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* Radius & shadow */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 999px;
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
  --shadow-overlay: 0 12px 32px rgba(16, 24, 40, 0.16);
  --shadow-nav: 0 2px 4px rgba(16, 24, 40, 0.06);
  --shadow-thumb: 0 1px 2px rgba(0, 0, 0, 0.2);

  /* Ukuran layout (dari frame Figma 1280px) */
  --sidebar-width: 240px;
  --topbar-height: 72px;
  --content-padding: var(--space-8);
  --content-max-width: 1280px;

  --transition: 0.2s ease;
}

/* Tema gelap — hanya token yang berubah, komponen otomatis mengikuti */
:root[data-theme="dark"] {
  color-scheme: dark;

  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --color-primary-soft: rgba(99, 102, 241, 0.16);
  --color-primary-soft-hover: rgba(99, 102, 241, 0.26);
  --color-primary-dark: #4338ca;
  --color-success-soft: rgba(34, 197, 94, 0.15);
  --color-success-text: #4ade80;
  --color-warning-soft: rgba(245, 158, 11, 0.16);
  --color-warning-text: #fbbf24;
  --color-danger-soft: rgba(239, 68, 68, 0.16);
  --color-danger-text: #fca5a5;

  --color-bg: #0b1120;
  --color-surface: #111827;
  --color-surface-muted: #1f2937;
  --color-border: #273244;

  --color-text: #f3f4f6;
  --color-text-body: #d1d5db;
  --color-text-secondary: #9ca3af;
  --color-text-muted: #6b7280;

  --color-toast: #1f2937;
  --color-overlay: rgba(0, 0, 0, 0.6);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-overlay: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* 2. RESET & BASE ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

body.modal-open {
  overflow: hidden;
}

h1, h2, h3, h4, p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

img,
svg {
  display: block;
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--sm {
  width: 16px;
  height: 16px;
}

.icon--lg {
  width: 28px;
  height: 28px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.mt-3 {
  margin-top: var(--space-3);
}

.mt-5 {
  margin-top: var(--space-5);
}

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

.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: var(--fs-sm);
  font-weight: 600;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* 3. LAYOUT =============================================================== */

/* App shell: sidebar | area utama */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-3);
  margin-bottom: var(--space-5);
}

.brand-logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.brand-name {
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sidebar .sidebar__close {
  display: none;
  margin-left: auto;
}

.sidebar__label {
  padding: 0 var(--space-3);
  margin-bottom: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

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

/* Item menu: ikon di atas, label di bawah (sesuai Figma) */
.nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition);
}

.nav__link:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.nav__link.is-active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: auto;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--color-surface-muted);
}

.sidebar__user .user-meta {
  flex: 1;
  min-width: 0;
}

.sidebar__user .icon-btn {
  background: transparent;
}

.user-meta__name {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.user-meta__role {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.user-meta__name,
.user-meta__role {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.avatar {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-on-primary);
}

.avatar--dark {
  background: var(--color-primary-dark);
}

/* --- Area utama --- */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0; /* cegah overflow dari tabel lebar */
}

/* --- Topbar / Header --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: var(--topbar-height);
  padding: 0 var(--content-padding);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar .topbar__menu {
  display: none;
}

.search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  min-width: 0;
  max-width: 400px;
  height: 38px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text-secondary);
}

.search__input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.search:focus-within {
  box-shadow: 0 0 0 2px var(--color-primary-soft);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.topbar__user {
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
}

.icon-btn {
  position: relative;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition);
}

.icon-btn:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.icon-btn--danger:hover {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.dot {
  position: absolute;
  top: 8px;
  right: 9px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--color-surface);
  border-radius: var(--radius-full);
  background: var(--color-danger);
}

/* --- Konten --- */
.content {
  flex: 1;
  width: 100%;
  max-width: var(--content-max-width);
  padding: var(--space-8) var(--content-padding);
}

/* --- Footer --- */
.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4) var(--content-padding);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

/* Overlay di belakang sidebar saat mode mobile */
.overlay {
  display: none;
}

/* 4. KOMPONEN DASAR ======================================================= */

/* --- Page header --- */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.page-header__eyebrow {
  margin-bottom: var(--space-1);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.page-header__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-header__subtitle {
  margin-top: var(--space-1);
  color: var(--color-text-secondary);
}

.page-header__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.breadcrumb {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
  font-size: var(--fs-sm);
  color: var(--color-primary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* --- Button --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 36px;
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn--danger {
  background: var(--color-danger);
  color: var(--color-on-primary);
}

.btn--danger:hover {
  background: var(--color-danger-hover);
}

.btn--outline {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover:not(:disabled) {
  background: var(--color-bg);
}

.btn--link {
  height: auto;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-primary);
}

.btn--link:hover {
  text-decoration: underline;
}

.btn--link + .btn--link {
  margin-left: var(--space-3);
}

.btn--block {
  width: 100%;
  height: 40px;
}

/* --- Card --- */
.card {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.card__header {
  margin-bottom: var(--space-4);
}

.card__header--split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.table-card .card__header {
  margin: 0;
  padding: var(--space-5);
}

.card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
}

.card__subtitle {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* --- Badge status --- */
.badge {
  display: inline-block;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  white-space: nowrap;
}

.badge--success { background: var(--color-success-soft); color: var(--color-success-text); }
.badge--warning { background: var(--color-warning-soft); color: var(--color-warning-text); }
.badge--danger  { background: var(--color-danger-soft);  color: var(--color-danger); }
.badge--neutral { background: var(--color-surface-muted); color: var(--color-text-secondary); }
.badge--primary { background: var(--color-primary-soft); color: var(--color-primary); }

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-5);
}

/* Item grid boleh menyusut (grafik/tabel lebar tidak mendorong halaman melebar) */
.grid > * {
  min-width: 0;
}

.grid + .grid,
.grid + .card,
.card + .grid,
.section + .section {
  margin-top: var(--space-5);
}

.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--2-1 { grid-template-columns: 2fr 1fr; }

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* --- Placeholder area konten (template) --- */
.placeholder {
  display: grid;
  place-items: center;
  min-height: 220px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* 5. KOMPONEN DATA ======================================================== */

/* --- Stat card (ringkasan dashboard) --- */
.stat-card__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
}

.stat-card__icon {
  margin-top: var(--space-1);
  color: var(--color-primary);
}

.stat-card__value {
  margin: var(--space-3) 0 var(--space-2);
  font-size: var(--fs-stat);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-card__trend {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-success-text);
}

.stat-card__meta {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* Utilitas warna teks — diletakkan setelah komponen agar bisa menimpa warnanya */
.text-success {
  color: var(--color-success-text);
}

.text-danger {
  color: var(--color-danger);
}

/* --- Chart --- */
.chart-box {
  position: relative;
  height: 300px;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.chart-box--sm {
  height: 260px;
}

.chart-fallback {
  display: grid;
  place-items: center;
  height: 100%;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* --- List sederhana (recent enrollments, aktivitas) --- */
.list-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.list-row:last-child {
  border-bottom: 0;
}

.list-row__meta {
  flex-shrink: 0;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* --- System status --- */
.status-item {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.status-item + .status-item {
  margin-top: var(--space-3);
}

.status-item__name {
  font-size: var(--fs-sm);
}

.status-item__state {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-success-text);
}

/* --- Toolbar filter --- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.toolbar .search {
  flex: 1 1 280px;
  max-width: none;
  height: 40px;
}

.toolbar .field__input {
  flex: 0 1 180px;
  width: auto;
}

/* --- Tabel --- */
.table-card {
  padding: 0;
  overflow: hidden;
}

.table-wrap {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.table th {
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface-muted);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.table td {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  vertical-align: middle;
}

.table td:first-child {
  color: var(--color-text);
  font-weight: 500;
}

.table tbody tr:hover {
  background: var(--color-bg);
}

.table__code {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 400;
  color: var(--color-text-muted);
}

.table__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.table__empty {
  padding: var(--space-8) var(--space-5) !important;
  text-align: center;
  color: var(--color-text-muted) !important;
}

.table-progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 140px;
}

.table-progress .progress {
  flex: 1;
}

/* --- Pagination --- */
.table-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pagination .btn {
  min-width: 36px;
  padding: 0 var(--space-3);
}

.pagination__gap {
  align-self: center;
  color: var(--color-text-muted);
}

.pagination .btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

/* 6. KOMPONEN FORM ======================================================== */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

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

.field__label {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.field__label .required {
  color: var(--color-danger);
}

.field__input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--fs-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

textarea.field__input {
  height: auto;
  min-height: 110px;
  padding: var(--space-3);
  resize: vertical;
}

.field__input--auto {
  width: auto;
}

.field__input:focus {
  outline: 0;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.field__input::placeholder {
  color: var(--color-text-muted);
}

.field__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.field__error {
  display: none;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-xs);
  color: var(--color-danger);
}

.field.is-invalid .field__input {
  border-color: var(--color-danger);
}

.field.is-invalid .field__input:focus {
  box-shadow: 0 0 0 3px var(--color-danger-soft);
}

.field.is-invalid .field__error {
  display: flex;
}

/* Input dengan tombol di dalam (password) */
.input-group {
  position: relative;
}

.input-group .field__input {
  padding-right: 44px;
}

.input-group__btn {
  position: absolute;
  top: 50%;
  right: 4px;
  width: 32px;
  height: 32px;
  transform: translateY(-50%);
  background: transparent;
}

/* --- Switch (toggle) --- */
.switch-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
}

.switch-row + .switch-row {
  margin-top: var(--space-5);
}

.switch-row__title {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
}

.switch-row__desc {
  display: block;
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.switch {
  appearance: none;
  position: relative;
  width: 40px;
  height: 22px;
  margin: 0;
  border-radius: var(--radius-full);
  background: var(--color-border);
  cursor: pointer;
  transition: background var(--transition);
}

.switch::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--color-on-primary);
  box-shadow: var(--shadow-thumb);
  transition: transform var(--transition);
}

.switch:checked {
  background: var(--color-success);
}

.switch:checked::before {
  transform: translateX(18px);
}

/* --- Upload thumbnail --- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 150px;
  padding: var(--space-4);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  transition: background var(--transition);
}

.dropzone:hover,
.dropzone.is-dragover {
  background: var(--color-primary-soft-hover);
}

.dropzone:focus-within {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.dropzone__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.dropzone__title {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.dropzone__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.dropzone__preview {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* --- Footer form --- */
.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-5);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.save-state {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.save-state.is-dirty {
  color: var(--color-warning-text);
}

/* --- Alert --- */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
}

.alert--danger {
  background: var(--color-danger-soft);
  color: var(--color-danger-text);
}

/* 7. KOMPONEN COURSE ====================================================== */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin: var(--space-8) 0 var(--space-4);
}

.section-head__title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-md);
  font-weight: 700;
}

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

/* Toggle Grid view / Table view */
.segmented {
  display: flex;
  gap: var(--space-1);
}

.segmented__btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.segmented__btn.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
}

.course-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.course-card__body {
  flex: 1;
  padding: var(--space-4);
}

.course-card__thumb {
  height: 108px;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-md);
}

.course-card__code {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.course-card__title {
  margin: var(--space-2) 0 var(--space-1);
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.3;
}

.course-card__instructor {
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.course-card__meta {
  margin-bottom: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.course-card__footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
}

/* --- Progress bar --- */
.progress {
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  border-radius: inherit;
  background: var(--color-success);
}

.progress--lg {
  height: 10px;
  margin: var(--space-2) 0;
}

/* Keterangan kecil di bawah halaman */
.info-bar {
  margin-top: var(--space-6);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.info-bar strong {
  color: var(--color-text);
}

.empty {
  padding: var(--space-8);
  text-align: center;
  color: var(--color-text-muted);
}

/* Detail di dalam modal */
.detail-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--fs-sm);
}

.detail-list dt {
  color: var(--color-text-secondary);
}

.detail-list dd {
  margin: 0;
  font-weight: 500;
}

/* --- Halaman belajar (course.html) --- */
.grid--start {
  align-items: start;
}

.course-progress {
  width: 100%;
  max-width: 280px;
}

.course-progress__value {
  margin: var(--space-1) 0 var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.course-progress__value strong {
  font-size: var(--fs-lg);
  color: var(--color-text);
}

.lesson__title {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.lesson__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-2) 0 var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.lesson__video {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  margin-bottom: var(--space-5);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lesson__play {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border: 0;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-overlay);
  transition: transform var(--transition);
}

.lesson__play:hover {
  transform: scale(1.06);
}

.lesson__play .icon {
  width: 26px;
  height: 26px;
  margin-left: 3px;
  fill: currentColor;
}

.lesson__video-caption {
  position: absolute;
  left: var(--space-3);
  bottom: var(--space-3);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-scrim);
  font-size: var(--fs-xs);
  color: var(--color-on-dark);
}

.lesson__video-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: var(--color-scrim-track);
}

.lesson__video-progress > div {
  height: 100%;
  width: 0;
  background: var(--color-primary);
  transition: width 0.1s linear;
}

.lesson__body {
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--color-text-body);
}

.lesson__body p + p {
  margin-top: var(--space-3);
}

.lesson__body h3 {
  margin: var(--space-5) 0 var(--space-2);
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text);
}

.lesson__body ul {
  padding-left: var(--space-5);
  list-style: disc;
}

.task-list {
  margin: var(--space-5) 0 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.task-list legend {
  padding: 0 var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.task {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--fs-sm);
  cursor: pointer;
}

.task input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--color-success);
  cursor: pointer;
}

.task input:checked + span {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.lesson__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.lesson__complete {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
}

.lesson__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.done-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-success-text);
}

/* Daftar modul di samping */
.module-panel {
  display: flex;
  flex-direction: column;
  max-height: 560px;
}

.module-list {
  margin: 0 calc(var(--space-2) * -1);
  padding: 0;
  list-style: none;
  overflow-y: auto;
}

.module-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2);
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  font-size: var(--fs-sm);
  text-align: left;
  color: var(--color-text);
}

.module-item:hover:not(.is-locked) {
  background: var(--color-bg);
}

.module-item.is-selected {
  background: var(--color-primary-soft);
  font-weight: 600;
}

.module-item__num {
  flex-shrink: 0;
  width: 22px;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.module-item__title {
  flex: 1;
  min-width: 0;
}

.module-item__type {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 400;
  color: var(--color-text-secondary);
}

.module-item.is-done .icon {
  color: var(--color-success);
}

.module-item.is-current .icon {
  color: var(--color-primary);
}

.module-item.is-locked {
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* 8. OVERLAY ============================================================== */

/* --- Dropdown notifikasi --- */
.dropdown {
  position: relative;
}

.dropdown__menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  z-index: 40;
  width: 300px;
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-overlay);
}

.dropdown__title {
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.notif {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.notif:hover {
  background: var(--color-bg);
}

.notif__text {
  font-size: var(--fs-sm);
}

.notif__time {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* --- Modal --- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  animation: fade-in 0.15s ease;
}

.modal__dialog {
  position: relative;
  width: 100%;
  max-width: 440px;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-overlay);
  animation: pop-in 0.18s ease;
}

.modal__title {
  margin-bottom: var(--space-2);
  font-size: var(--fs-lg);
  font-weight: 700;
}

.modal__body {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.modal__body strong {
  color: var(--color-text);
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

/* --- Toast --- */
.toast-stack {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: 360px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-toast);
  box-shadow: var(--shadow-overlay);
  font-size: var(--fs-sm);
  color: var(--color-on-dark);
  animation: slide-in 0.2s ease;
}

.toast--success .icon { color: var(--color-success); }
.toast--error .icon { color: var(--color-danger); }

.toast.is-leaving {
  animation: fade-out 0.2s ease forwards;
}

@keyframes fade-in { from { opacity: 0; } }
@keyframes fade-out { to { opacity: 0; transform: translateY(8px); } }
@keyframes pop-in { from { opacity: 0; transform: scale(0.96); } }
@keyframes slide-in { from { opacity: 0; transform: translateY(8px); } }
@keyframes spin { to { transform: rotate(360deg); } }

/* --- State view: loading / empty / error (UI.loading, UI.empty, UI.error) --- */
.state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  color: var(--color-text-secondary);
}

.state__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-1);
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
}

.state--error .state__icon {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

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

.state__text {
  max-width: 420px;
  font-size: var(--fs-sm);
}

.state .btn {
  margin-top: var(--space-2);
}

.state-row > td {
  padding: 0;
}

.spinner {
  display: inline-block;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 3px solid var(--color-primary-soft);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.spinner--sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
  border-color: currentColor;
  border-top-color: transparent;
}

.btn.is-busy,
.btn.is-busy:disabled {
  cursor: progress;
  opacity: 0.85;
}

/* --- Guard halaman (RG-01): konten terlindungi tersembunyi sampai sesi terverifikasi --- */
body[data-role]:not(.is-ready) .app {
  visibility: hidden;
}

body[data-role]:not(.is-ready):not(.boot-failed)::after {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 32px;
  margin: -16px 0 0 -16px;
  border: 3px solid var(--color-primary-soft);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.boot-error {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: var(--color-bg);
}

.boot-error > .card {
  width: 100%;
  max-width: 480px;
}

/* 9. HALAMAN LOGIN ======================================================== */
/* Tata letak ala Udemy: header tipis, ilustrasi di kiri, form di kanan */
.auth {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--color-surface);
}

.auth-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: var(--topbar-height);
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-nav);
}

.auth-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
}

.auth-nav__tagline {
  margin-right: auto;
  padding-left: var(--space-4);
  border-left: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.auth__layout {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: var(--space-8);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px var(--space-6);
}

.auth__art {
  display: flex;
  justify-content: center;
}

.auth__art img {
  width: 100%;
  max-width: 520px;
  height: auto;
}

/* Ilustrasi bergaris hitam — beri latar terang agar tetap terlihat di tema gelap */
:root[data-theme="dark"] .auth__art img {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--color-art-bg);
}

.auth__panel {
  width: 100%;
  max-width: 420px;
  justify-self: center;
}

.auth__title {
  margin-bottom: var(--space-8);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-align: center;
}

/* Input dengan label di dalam kotak (floating label) */
.float-field {
  position: relative;
}

.float-field .field__input {
  height: 64px;
  padding: 22px var(--space-4) 6px;
  font-size: var(--fs-base);
}

.float-field label {
  position: absolute;
  top: 50%;
  left: calc(var(--space-4) + 1px);
  transform: translateY(-50%);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
  pointer-events: none;
  transition: top var(--transition), font-size var(--transition);
}

.float-field .field__input:focus + label,
.float-field .field__input:not(:placeholder-shown) + label {
  top: 18px;
  font-size: var(--fs-xs);
}

.float-field.input-group .field__input {
  padding-right: 52px;
}

.float-field .input-group__btn {
  right: var(--space-2);
}

.auth__submit {
  height: 48px;
  font-size: var(--fs-base);
  font-weight: 700;
}

.auth__account {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
  font-size: var(--fs-sm);
}

.auth__account-email {
  min-width: 0;
  overflow: hidden;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth__demo {
  margin-top: var(--space-6);
}

/* Garis pemisah dengan teks di tengah ("Other log in options") */
.auth__divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.auth__divider::before,
.auth__divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth__box {
  margin-top: var(--space-8);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
  font-size: var(--fs-sm);
  text-align: center;
}

.auth__box > p {
  padding: var(--space-4);
}

.auth__box > p + p {
  border-top: 1px solid var(--color-border);
}

.auth__box .btn--link {
  font-weight: 700;
  text-decoration: underline;
}

.demo-account {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--fs-xs);
  text-align: left;
  transition: border-color var(--transition), background var(--transition);
}

.demo-account + .demo-account {
  margin-top: var(--space-2);
}

.demo-account:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.demo-account__email {
  font-weight: 600;
}

/* 10. FITUR LANJUTAN (sortir, tab, user, quiz, profil) ===================== */

.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--1-2 { grid-template-columns: 1fr 2fr; }

.settings-note {
  margin-bottom: var(--space-5);
}

/* --- Header tabel yang bisa diurutkan --- */
.sort-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
  color: inherit;
}

.sort-btn .icon {
  opacity: 0.4;
}

.sort-btn:hover,
th[aria-sort="ascending"] .sort-btn,
th[aria-sort="descending"] .sort-btn {
  color: var(--color-primary);
}

th[aria-sort="ascending"] .sort-btn .icon,
th[aria-sort="descending"] .sort-btn .icon {
  opacity: 1;
}

/* --- Tabs --- */
.tabs__list {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.tabs__tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-text-secondary);
}

.tabs__tab:hover {
  color: var(--color-text);
}

.tabs__tab[aria-selected="true"] {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
}

.tabs__count {
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

/* --- Modal besar (form) --- */
.modal__dialog {
  max-height: calc(100vh - var(--space-8));
  overflow-y: auto;
}

.modal__dialog--lg {
  max-width: 720px;
}

.modal__body .form-stack {
  margin-top: var(--space-4);
}

.field__label,
.field__input {
  color: var(--color-text);
}

/* --- Sel user (avatar + nama + email) --- */
.user-cell {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 200px;
}

.user-cell__email {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 400;
  color: var(--color-text-muted);
}

.avatar--sm {
  width: 32px;
  height: 32px;
  font-size: var(--fs-2xs);
}

.avatar--xl {
  width: 72px;
  height: 72px;
  font-size: 1.375rem;
}

/* --- Daftar baris dengan aksi (approval, modul) --- */
.row-list > li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.row-list > li:last-child {
  border-bottom: 0;
}

.row-list__main {
  flex: 1;
  min-width: 0;
}

.row-list__title {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.row-list__meta {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.row-list__order {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-text-secondary);
}

/* --- Daftar pilihan dalam modal (pilih mahasiswa / course) --- */
.pick-list {
  max-height: 320px;
  overflow-y: auto;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.pick-list > li {
  border-bottom: 1px solid var(--color-border);
}

.pick-list > li:last-child {
  border-bottom: 0;
}

.pick-list .task input {
  accent-color: var(--color-primary);
}

.row-list__actions {
  display: flex;
  flex-shrink: 0;
  gap: var(--space-1);
}

.icon-btn--sm {
  width: 32px;
  height: 32px;
}

.icon-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* --- Kotak info kecil (key → value) --- */
.kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
}

.kv__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
}

.kv__value {
  margin-top: var(--space-1);
  font-weight: 600;
}

/* --- Input nilai di tabel --- */
.grade-input {
  width: 84px;
  height: 34px;
}

/* --- Quiz (mahasiswa) --- */
.quiz-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.quiz-timer {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.quiz-timer.is-low {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.question__text {
  margin: var(--space-2) 0 var(--space-5);
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.4;
}

.options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  border: 0;
}

.option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

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

.option input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--color-primary);
}

.option:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  font-weight: 600;
}

.option__letter {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  font-size: var(--fs-xs);
  font-weight: 700;
}

.option.is-correct {
  border-color: var(--color-success);
  background: var(--color-success-soft);
}

.option.is-wrong {
  border-color: var(--color-danger);
  background: var(--color-danger-soft);
}

.option.is-review {
  cursor: default;
}

.q-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
}

.q-nav__btn {
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

.q-nav__btn.is-answered {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.q-nav__btn.is-current {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

.legend span::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: var(--space-1);
  border-radius: 3px;
  vertical-align: -1px;
  background: var(--swatch);
  border: 1px solid var(--color-border);
}

.result {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
}

.result__score {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  background: conic-gradient(var(--ring) calc(var(--value) * 1%), var(--color-surface-muted) 0);
}

.result__score span {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: 1.75rem;
  font-weight: 700;
}

.review-item + .review-item {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.review-item .question__text {
  margin-bottom: var(--space-3);
  font-size: var(--fs-base);
}

/* --- Editor soal quiz (dosen) --- */
.q-editor {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.q-editor + .q-editor {
  margin-top: var(--space-4);
}

.q-editor__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.q-editor__options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.q-editor__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.q-editor__option input[type="radio"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--color-success);
}

.q-editor.is-invalid {
  border-color: var(--color-danger);
}

.q-editor__error {
  margin-top: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--color-danger);
}

/* --- Profil --- */
.profile-card {
  text-align: center;
}

.profile-card .avatar {
  margin: 0 auto var(--space-3);
}

.profile-card__name {
  font-size: var(--fs-lg);
  font-weight: 700;
}

.profile-card .detail-list {
  text-align: left;
}

.theme-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.theme-option {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  cursor: pointer;
}

.theme-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.theme-option:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.theme-option:has(input:focus-visible) {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 11. RESPONSIVE ========================================================== */

/* Tablet: sidebar menjadi off-canvas */
@media (max-width: 1024px) {
  :root {
    --content-padding: var(--space-6);
  }

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

  /* Login: ilustrasi disembunyikan, form di tengah */
  .auth__layout {
    grid-template-columns: 1fr;
  }

  .auth__art {
    display: none;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 30;
    width: var(--sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--transition);
  }

  .sidebar .sidebar__close,
  .topbar .topbar__menu {
    display: grid;
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
    box-shadow: var(--shadow-overlay);
  }

  body.sidebar-open .overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 20;
    background: var(--color-overlay);
  }

  .grid--2-1,
  .grid--2,
  .grid--1-2 {
    grid-template-columns: 1fr;
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .module-panel {
    position: static;
    max-height: 420px;
  }

  .course-progress {
    max-width: none;
  }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --content-padding: var(--space-4);
    --fs-xl: 1.5rem;
    --fs-stat: 1.875rem;
  }

  .grid--3,
  .grid--4,
  .field-row,
  .q-editor__options {
    grid-template-columns: 1fr;
  }

  .topbar {
    gap: var(--space-2);
  }

  .topbar__actions {
    gap: var(--space-2);
  }

  .topbar__user {
    display: none;
  }

  .page-header__actions,
  .form-footer__actions {
    width: 100%;
  }

  .page-header__actions .btn,
  .form-footer__actions .btn {
    flex: 1;
  }

  .toolbar .field__input {
    flex: 1 1 100%;
  }

  /* Footer modul: tombol selesai di atas, Previous/Next sejajar di bawah */
  .lesson__footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .lesson__complete {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .lesson__complete .btn {
    width: 100%;
  }

  /* Tabel responsif: setiap baris menjadi kartu bertumpuk */
  .table--stack thead {
    display: none;
  }

  .table--stack,
  .table--stack tbody,
  .table--stack tr,
  .table--stack td {
    display: block;
    width: 100%;
  }

  .table--stack tr {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--color-border);
  }

  .table--stack tr:first-child {
    border-top: 0;
  }

  .table--stack td {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-1) 0;
    border: 0;
    text-align: right;
  }

  .table--stack td::before {
    content: attr(data-label);
    flex-shrink: 0;
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
  }

  .table--stack td:first-child {
    display: block;
    padding-bottom: var(--space-2);
    font-size: var(--fs-base);
    text-align: left;
  }

  .table--stack td:first-child::before {
    content: none;
  }

  .table--stack .table-progress {
    min-width: 0;
    width: 60%;
  }

  .dropdown__menu {
    position: fixed;
    top: calc(var(--topbar-height) - var(--space-2));
    right: var(--space-4);
    left: var(--space-4);
    width: auto;
  }

  .auth-nav {
    padding: 0 var(--space-4);
  }

  .auth-nav__tagline {
    display: none;
  }

  .auth-nav .icon-btn {
    margin-left: auto;
  }

  .auth__layout {
    padding: var(--space-6) var(--space-4);
  }

  .auth__title {
    font-size: 1.5rem;
  }
}

/* 12. PRINT =============================================================== */
@media print {
  @page {
    margin: 16mm;
  }

  body {
    background: #fff; /* cetak selalu di kertas putih, apa pun temanya */
  }

  .app {
    display: block;
  }

  .sidebar,
  .topbar,
  .footer,
  .overlay,
  .no-print,
  .toast-stack {
    display: none !important;
  }

  .content {
    max-width: none;
    padding: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid var(--color-border);
    break-inside: avoid;
  }

  .print-only {
    display: block !important;
  }

  .table th {
    background: var(--color-surface-muted) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .progress__bar,
  .badge {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

.print-only {
  display: none;
}

/* =========================================================================
   Katalog publik (catalog.html)
   ========================================================================= */
.catalog-page .catalog {
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}
.catalog-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2, 8px);
  margin-left: auto;
}
@media (max-width: 640px) {
  .catalog-nav .btn { padding-inline: 10px; }
  .auth-nav__tagline { display: none; }
}

/* Video materi dari URL (YouTube embed) */
.lesson__embed {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg, 12px);
  overflow: hidden;
  background: var(--color-surface-alt, #000);
  margin-bottom: var(--space-5, 20px);
}
.lesson__embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Pengalih mode instructor: Learn / Teach */
.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  margin: var(--space-4) 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.mode-switch__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}
.mode-switch__btn:hover {
  color: var(--color-text);
  background: var(--color-primary-soft);
}
.mode-switch__btn.is-active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
img.course-card__thumb {
  display: block;
  width: 100%;
  object-fit: cover;
}

/* =========================================================================
   Katalog ala Udemy: hero, chip kategori, landing page, kurikulum accordion
   ========================================================================= */
.catalog-hero {
  padding: var(--space-6, 24px) 0 var(--space-4);
}
.catalog-hero__title {
  font-size: 32px;
  line-height: 1.2;
  margin: 4px 0 8px;
}
.catalog-hero__search {
  max-width: 640px;
  margin-top: var(--space-4);
}
.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-body);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.chip:hover {
  border-color: var(--color-primary);
}
.chip.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}
.course-card__rating {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.course-card__rating strong {
  color: var(--color-warning);
}
.badge--free {
  background: var(--color-success-soft);
  color: var(--color-success);
}
.landing {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-5, 20px);
  align-items: start;
}
.landing__aside {
  position: sticky;
  top: 16px;
}
.landing__thumb {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}
.landing__facts {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0 0;
  display: grid;
  gap: 10px;
  color: var(--color-text-body);
}
.landing__facts li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.curriculum {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.curriculum details + details {
  border-top: 1px solid var(--color-border);
}
.curriculum summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 500;
}
.curriculum summary::-webkit-details-marker {
  display: none;
}
.curriculum summary:hover {
  background: var(--color-primary-soft);
}
.curriculum__meta {
  margin-left: auto;
  color: var(--color-text-secondary);
  font-size: 13px;
  white-space: nowrap;
}
.curriculum__body {
  padding: 0 16px 14px 44px;
  color: var(--color-text-secondary);
  font-size: 14px;
}
@media (max-width: 1024px) {
  .landing {
    grid-template-columns: 1fr;
  }
  .landing__aside {
    position: static;
  }
}
.course-card__title a {
  color: inherit;
  text-decoration: none;
}
.course-card__title a:hover {
  color: var(--color-primary);
}

/* --- Ulasan course (landing page) --- */
.stars {
  color: var(--color-warning);
  letter-spacing: 1px;
  white-space: nowrap;
}
.stars__off {
  color: var(--color-border);
}
.review-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-5, 20px);
  align-items: center;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.review-summary__score {
  text-align: center;
}
.review-summary__value {
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-heading, inherit);
}
.review-summary__bars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}
.review-summary__bars li {
  display: grid;
  grid-template-columns: 36px 1fr 28px;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.review-summary__bars .progress {
  display: block;
  margin: 0;
}
.review-summary__bars .progress__bar {
  display: block;
  background: var(--color-warning);
}
.review-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.review {
  display: flex;
  gap: 12px;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}
.review:last-child {
  border-bottom: 0;
}
.review__body {
  flex: 1;
  min-width: 0;
}
.review__body p {
  margin: 0 0 4px;
}
.review__comment {
  color: var(--color-text-body);
  white-space: pre-line;
  overflow-wrap: anywhere;
}
.review__actions {
  display: flex;
  gap: 4px;
  align-items: flex-start;
}
.review-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-4);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--color-success-soft);
}
.review-form {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-5, 20px);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.review-form__title {
  font-size: 16px;
  margin: 0;
}
.review-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}
.rating-input {
  border: 0;
  margin: 0;
  padding: 0;
}
.rating-input__stars {
  display: inline-flex;
  flex-direction: row-reverse;
  gap: 2px;
}
.rating-input__stars input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.rating-input__stars label {
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: var(--color-border);
  transition: color 0.15s;
}
.rating-input__stars input:checked ~ label,
.rating-input__stars label:hover,
.rating-input__stars label:hover ~ label {
  color: var(--color-warning);
}
.rating-input__stars input:focus-visible + label {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}
.rating-input.is-invalid .field__error {
  display: flex;
}
@media (max-width: 640px) {
  .review-summary {
    grid-template-columns: 1fr;
  }
}

/* --- Profil publik instructor --- */
.instructor-hero {
  display: flex;
  gap: var(--space-5, 20px);
  align-items: center;
  flex-wrap: wrap;
}
.instructor-hero .avatar {
  width: 88px;
  height: 88px;
  font-size: 30px;
}
.instructor-bio {
  white-space: pre-line;
  color: var(--color-text-body);
}
.course-card__instructor a {
  color: inherit;
}
.course-card__instructor a:hover {
  color: var(--color-primary);
}

/* Petunjuk di samping tombol "Submit for approval" (course tanpa modul) */
.course-actions__hint {
  flex-basis: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  color: var(--color-warning);
}

/* =========================================================================
   Katalog: grid kartu menyesuaikan lebar konten (publik penuh, aplikasi dengan sidebar)
   ========================================================================= */
.catalog-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
}
/* Shell aplikasi (pages/browse.html): hero lebih ringkas, landing page satu kolom lebih awal */
.catalog-hero--app {
  padding-top: 0;
}
.catalog-hero--app .catalog-hero__title {
  font-size: 26px;
}
@media (max-width: 1240px) {
  .catalog-app .landing {
    grid-template-columns: 1fr;
  }
  .catalog-app .landing__aside {
    position: static;
  }
}