/*
 * courses.css — Système de cours CDD
 * Préfixe : crs-
 * Utilisé par le template page-cours.php
 * Extensible pour tous les cours (Tailwind, JS, PHP, React, etc.)
 */

/* ============================================================
   1. LAYOUT DU COURS (template)
   ============================================================ */

.crs-page {
  padding: 44px 0 60px;
}

.crs-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}

.crs-main {
  min-width: 0; /* évite le débordement en grid */
}

/* --- Sidebar --- */
.crs-sidebar {
  position: sticky;
  top: 100px;
}

.crs-sidebar-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(23, 32, 51, 0.05);
}

.crs-sidebar-title {
  padding: 16px 20px;
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  border-bottom: 1px solid var(--border);
  margin: 0;
}

.crs-sidebar-course-name {
  display: block;
  padding: 14px 20px 10px;
  font-family: Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.crs-sidebar-course-name:hover {
  color: var(--accent);
}

.crs-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  max-height: 420px;
  overflow-y: auto;
}

.crs-sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  font-family: Arial, sans-serif;
  font-size: 0.88rem;
  color: var(--text-soft);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.crs-sidebar-item:hover {
  background: var(--surface);
  color: var(--text);
}

.crs-sidebar-item.is-active {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 700;
  border-left-color: var(--accent);
}

.crs-sidebar-item.is-soon {
  opacity: 0.5;
  cursor: default;
}

.crs-sidebar-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  background: var(--surface-strong);
  color: var(--text-soft);
}

.crs-sidebar-item.is-active .crs-sidebar-num {
  background: var(--accent);
  color: #fff;
}

.crs-sidebar-item.is-done .crs-sidebar-num {
  background: #dcfce7;
  color: #166534;
}

/* --- Breadcrumb --- */
.crs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  font-family: Arial, sans-serif;
  font-size: 0.84rem;
  color: var(--text-soft);
}

.crs-breadcrumb a {
  color: var(--text-soft);
  text-decoration: none;
}

.crs-breadcrumb a:hover {
  color: var(--text);
}

.crs-breadcrumb-sep {
  color: var(--border);
}

.crs-breadcrumb strong {
  color: var(--text);
  font-weight: 600;
}

/* --- Barre de progression --- */
.crs-progress-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  padding: 12px 18px;
  background: var(--surface);
  border-radius: 12px;
  font-family: Arial, sans-serif;
  font-size: 0.84rem;
  color: var(--text-soft);
}

.crs-progress-track {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.crs-progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #0ea5e9);
  transition: width 0.4s ease;
}

/* --- Navigation prev/next --- */
.crs-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.crs-nav-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.crs-nav-btn:hover {
  border-color: #93c5fd;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.1);
  transform: translateY(-2px);
}

.crs-nav-btn.is-next {
  text-align: right;
}

.crs-nav-label {
  font-family: Arial, sans-serif;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  display: flex;
  align-items: center;
  gap: 6px;
}

.crs-nav-btn.is-next .crs-nav-label {
  justify-content: flex-end;
}

.crs-nav-title {
  font-family: Georgia, serif;
  font-size: 0.96rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.35;
}

/* ============================================================
   2. HERO SOMMAIRE
   ============================================================ */

.crs-hero {
  border-radius: 28px;
  padding: 56px 48px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

/* Motif de fond discret */
.crs-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}

.crs-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.crs-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  line-height: 1.05;
  color: #f8fafc;
  margin: 0 0 18px;
  font-family: Georgia, serif;
}

.crs-hero h1 em {
  font-style: normal;
  color: rgba(255, 255, 255, 0.55);
}

.crs-hero-desc {
  color: rgba(248, 250, 252, 0.75);
  font-size: 1.06rem;
  line-height: 1.8;
  max-width: 62ch;
  margin: 0 0 32px;
}

.crs-hero-watermark {
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 7rem;
  opacity: 0.07;
  font-weight: 900;
  font-family: Arial, sans-serif;
  color: #fff;
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
}

.crs-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.crs-stat {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  padding: 14px 20px;
  text-align: center;
  min-width: 80px;
}

.crs-stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  font-family: Arial, sans-serif;
}

.crs-stat span {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
  font-family: Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Thèmes de couleur par langage --- */
.crs-hero.crs-theme-tailwind {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 55%, #0f766e 100%);
}

.crs-hero.crs-theme-tailwind .crs-hero-badge,
.crs-hero.crs-theme-tailwind .crs-hero-desc,
.crs-hero.crs-theme-tailwind h1 em,
.crs-hero.crs-theme-tailwind .crs-stat span {
  color: #fff;
}

.crs-hero.crs-theme-javascript {
  background: linear-gradient(135deg, #1c1917 0%, #78350f 55%, #ca8a04 100%);
}

.crs-hero.crs-theme-php {
  background: linear-gradient(135deg, #1e1b4b 0%, #4338ca 55%, #7c3aed 100%);
}

.crs-hero.crs-theme-react {
  background: linear-gradient(135deg, #0c1445 0%, #0284c7 55%, #06b6d4 100%);
}

.crs-hero.crs-theme-python {
  background: linear-gradient(135deg, #052e16 0%, #166534 55%, #16a34a 100%);
}

.crs-hero.crs-theme-css {
  background: linear-gradient(135deg, #1e1b4b 0%, #4f46e5 55%, #ec4899 100%);
}

/* accent text dans h1 selon le thème */
.crs-hero.crs-theme-tailwind h1 span { color: #38bdf8; }
.crs-hero.crs-theme-javascript h1 span { color: #fde68a; }
.crs-hero.crs-theme-php h1 span { color: #c4b5fd; }
.crs-hero.crs-theme-react h1 span { color: #7dd3fc; }
.crs-hero.crs-theme-python h1 span { color: #86efac; }
.crs-hero.crs-theme-css h1 span { color: #f9a8d4; }

/* stat accent par thème */
.crs-hero.crs-theme-tailwind .crs-stat strong { color: #38bdf8; }
.crs-hero.crs-theme-javascript .crs-stat strong { color: #fde68a; }
.crs-hero.crs-theme-php .crs-stat strong { color: #c4b5fd; }
.crs-hero.crs-theme-react .crs-stat strong { color: #7dd3fc; }
.crs-hero.crs-theme-python .crs-stat strong { color: #86efac; }
.crs-hero.crs-theme-css .crs-stat strong { color: #f9a8d4; }

/* ============================================================
   3. TABLE DES MATIÈRES (page sommaire)
   ============================================================ */

.crs-toc {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px;
  margin-bottom: 40px;
  box-shadow: 0 14px 40px rgba(23, 32, 51, 0.05);
}

.crs-toc-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 28px;
  font-size: 1.3rem;
  color: var(--text);
  font-family: Georgia, serif;
}

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

.crs-module {
  position: relative;
  padding: 15px 16px 15px 56px;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

.crs-module:last-child {
  border-bottom: 0;
}

.crs-module:hover {
  background: var(--surface);
}

.crs-module-num {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
}

.crs-module-num.is-done   { background: #dcfce7; color: #166534; }
.crs-module-num.is-active { background: #dbeafe; color: #1e40af; }
.crs-module-num.is-soon   { background: var(--surface-strong); color: #94a3b8; }

.crs-module > a,
.crs-module > strong {
  display: block;
  font-size: 0.97rem;
  color: var(--text);
  text-decoration: none;
  font-family: Georgia, serif;
  margin-bottom: 2px;
}

.crs-module > a:hover {
  color: #0284c7;
}

.crs-module > span,
.crs-module-desc {
  display: block;
  font-size: 0.86rem;
  color: var(--text-soft);
  font-family: Arial, sans-serif;
  line-height: 1.5;
}

.crs-module-tag {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: Arial, sans-serif;
  vertical-align: middle;
}

.crs-module-tag.is-new  { background: #dbeafe; color: #1e40af; }
.crs-module-tag.is-soon { background: #fef3c7; color: #92400e; }

/* ============================================================
   4. CARTES DE LEÇONS
   ============================================================ */

.crs-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.crs-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(23, 32, 51, 0.06);
  transition: transform 0.22s, box-shadow 0.22s;
  display: flex;
  flex-direction: column;
}

.crs-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(23, 32, 51, 0.1);
}

.crs-card-header {
  padding: 28px 28px 20px;
}

/* Thèmes de header de carte */
.crs-card-header.crs-theme-tailwind  { background: linear-gradient(135deg, #0f172a, #1e3a5f); }
.crs-card-header.crs-theme-javascript { background: linear-gradient(135deg, #1c1917, #b45309); }
.crs-card-header.crs-theme-php       { background: linear-gradient(135deg, #1e1b4b, #5b21b6); }
.crs-card-header.crs-theme-react     { background: linear-gradient(135deg, #0c1445, #0369a1); }
.crs-card-header.crs-theme-python    { background: linear-gradient(135deg, #052e16, #15803d); }
.crs-card-header.crs-theme-css       { background: linear-gradient(135deg, #1e1b4b, #be185d); }

/* couleur secondaire pour les n° pairs (variation) */
.crs-card-header.crs-theme-tailwind.is-alt  { background: linear-gradient(135deg, #0c4a6e, #0f766e); }
.crs-card-header.crs-theme-javascript.is-alt { background: linear-gradient(135deg, #78350f, #d97706); }
.crs-card-header.crs-theme-php.is-alt       { background: linear-gradient(135deg, #312e81, #7c3aed); }

.crs-card-num {
  font-family: Arial, sans-serif;
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 10px;
}

.crs-card-header h3 {
  margin: 0;
  font-size: 1.18rem;
  color: #f8fafc;
  line-height: 1.3;
  font-family: Georgia, serif;
}

.crs-card-body {
  padding: 22px 28px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.crs-card-body p {
  margin: 0 0 18px;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.65;
  flex: 1;
}

.crs-card-tags {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.crs-card-tags li {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.76rem;
  font-family: Arial, sans-serif;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

.crs-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: var(--accent);
  color: #fff !important;
  border-radius: 999px;
  font-family: Arial, sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  transition: background 0.2s, transform 0.2s;
  text-decoration: none;
  align-self: flex-start;
}

.crs-card-cta:hover {
  background: var(--accent-strong);
  color: #fff !important;
  transform: translateX(3px);
}

/* ============================================================
   5. BLOCS DE CODE
   ============================================================ */

.crs-code {
  background: #0f172a;
  border-radius: 18px;
  overflow: hidden;
  margin: 28px 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.crs-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 18px;
  background: rgba(255, 255, 255, 0.055);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.crs-code-lang {
  font-family: Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #94a3b8;
}

.crs-code-file {
  font-family: "Courier New", monospace;
  font-size: 0.76rem;
  color: #475569;
}

.crs-code pre {
  margin: 0;
  padding: 22px 20px;
  overflow-x: auto;
}

.crs-code code {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.89rem;
  line-height: 1.75;
  color: #e2e8f0;
  white-space: pre;
}

/* Coloration syntaxique */
.hl-kw   { color: #c084fc; } /* keyword */
.hl-str  { color: #86efac; } /* string */
.hl-cls  { color: #38bdf8; } /* class/selector */
.hl-attr { color: #fbbf24; } /* attribute/property */
.hl-cmt  { color: #475569; font-style: italic; } /* comment */
.hl-tag  { color: #f87171; } /* HTML tag */
.hl-val  { color: #fb923c; } /* value */
.hl-fn   { color: #a5f3fc; } /* function */
.hl-num  { color: #fdba74; } /* number */

/* ============================================================
   6. CALLOUTS (info / tip / warn / danger)
   ============================================================ */

.crs-callout {
  border-radius: 16px;
  padding: 18px 22px;
  margin: 28px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.crs-callout-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1.1;
}

.crs-callout-body {
  flex: 1;
  min-width: 0;
}

.crs-callout-body strong {
  display: block;
  margin-bottom: 5px;
  font-family: Arial, sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
}

.crs-callout-body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: inherit;
}

.crs-callout.is-info   { background: #f0f9ff; border-left: 4px solid #38bdf8; color: #0c4a6e; }
.crs-callout.is-tip    { background: #f0fdf4; border-left: 4px solid #4ade80; color: #14532d; }
.crs-callout.is-warn   { background: #fffbeb; border-left: 4px solid #fbbf24; color: #78350f; }
.crs-callout.is-danger { background: #fff1f2; border-left: 4px solid #f87171; color: #9f1239; }

/* ============================================================
   7. COMPARAISON CÔTE À CÔTE
   ============================================================ */

.crs-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}

.crs-compare-panel {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.crs-compare-label {
  padding: 9px 16px;
  font-family: Arial, sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.crs-compare-label.is-bad  { background: #fef2f2; color: #dc2626; }
.crs-compare-label.is-good { background: #f0fdf4; color: #16a34a; }
.crs-compare-label.is-old  { background: #fafaf9; color: #78716c; }
.crs-compare-label.is-new  { background: #eff6ff; color: #1d4ed8; }

.crs-compare-code {
  background: #0f172a;
  padding: 18px 16px;
}

.crs-compare-code code {
  font-family: "Courier New", monospace;
  font-size: 0.83rem;
  line-height: 1.7;
  color: #e2e8f0;
  white-space: pre;
  display: block;
}

/* ============================================================
   8. TABLEAUX
   ============================================================ */

.crs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-family: Arial, sans-serif;
  font-size: 0.87rem;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.crs-table th {
  background: #0f172a;
  color: #e2e8f0;
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  white-space: nowrap;
}

.crs-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
}

.crs-table tr:last-child td {
  border-bottom: 0;
}

.crs-table tr:hover td {
  background: var(--surface);
}

.crs-table code {
  background: var(--surface);
  padding: 2px 7px;
  border-radius: 5px;
  font-family: "Courier New", monospace;
  font-size: 0.82rem;
  color: #0284c7;
  white-space: nowrap;
}

/* ============================================================
   9. GRILLES DE DÉMO VISUELLE
   ============================================================ */

.crs-demo {
  margin: 24px 0;
}

.crs-demo-label {
  font-family: Arial, sans-serif;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  margin-bottom: 10px;
}

.crs-demo-grid {
  display: grid;
  gap: 10px;
}

.crs-demo-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.crs-demo-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.crs-demo-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.crs-demo-box {
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  font-family: Arial, sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
}

.crs-demo-box.is-blue   { background: #dbeafe; border: 2px solid #93c5fd; color: #1e40af; }
.crs-demo-box.is-green  { background: #dcfce7; border: 2px solid #86efac; color: #166534; }
.crs-demo-box.is-purple { background: #ede9fe; border: 2px solid #c4b5fd; color: #5b21b6; }
.crs-demo-box.is-teal   { background: #ccfbf1; border: 2px solid #5eead4; color: #0f766e; }
.crs-demo-box.is-orange { background: #ffedd5; border: 2px solid #fdba74; color: #9a3412; }

/* ============================================================
   10. ARTICLE SHELL (overrides pour les cours)
   ============================================================ */

/* Dans les leçons, les titres h2 ont un visuel plus structuré */
.crs-main .entry-content h2 {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
}

.crs-main .entry-content h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.crs-main .entry-content h3 {
  font-size: 1.18rem;
  margin-top: 32px;
  color: var(--text);
}

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

@media (max-width: 1023px) {
  .crs-layout {
    grid-template-columns: 1fr;
  }
  .crs-sidebar {
    position: static;
    order: -1; /* sidebar en haut sur mobile */
  }
  .crs-sidebar-list {
    max-height: 200px;
  }
}

@media (max-width: 767px) {
  .crs-hero {
    padding: 32px 22px;
  }
  .crs-hero-watermark {
    display: none;
  }
  .crs-toc {
    padding: 22px 18px;
  }
  .crs-nav {
    grid-template-columns: 1fr;
  }
  .crs-compare {
    grid-template-columns: 1fr;
  }
  .crs-demo-grid.cols-3,
  .crs-demo-grid.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .crs-card-header,
  .crs-card-body {
    padding-left: 20px;
    padding-right: 20px;
  }
}