/* ============================================================
   PHP Formation — Feuille de style principale
   Bootstrap 5 + Font Awesome + Custom Styles
   ============================================================ */

:root {
  --primary: #7c3aed;
  --primary-dark: #6d28d9;
  --accent: #2563eb;
  --success: #059669;
  --warning: #f59e0b;
  --danger: #dc2626;
  --info: #0891b2;
  --dark: #1e1b4b;
  --darker: #0f0a2e;
  --light: #f8fafc;
  --card-shadow: 0 4px 24px rgba(0,0,0,0.08);
  --card-hover-shadow: 0 8px 40px rgba(124,58,237,0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --code-bg: #1a1a2e;
  --transition: all .3s cubic-bezier(.4,0,.2,1);
}

/* ============================================================
   RESET / BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: #374151;
  background: #f8fafc;
  scroll-behavior: smooth;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
code { font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace; }

/* ============================================================
   NAVBAR
   ============================================================ */
#mainNav {
  background: rgba(15, 10, 46, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 12px 0;
  transition: var(--transition);
}
#mainNav.scrolled {
  background: rgba(15, 10, 46, 0.99);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.brand-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: white;
}
.brand-icon.small { width: 32px; height: 32px; font-size: 1rem; border-radius: 8px; }
.brand-text { font-size: 1.15rem; color: white; letter-spacing: -0.3px; }
.brand-text strong { color: #a855f7; }
.navbar-nav .nav-link { color: rgba(255,255,255,.75) !important; font-size: .9rem; padding: 6px 12px !important; border-radius: 8px; transition: var(--transition); }
.navbar-nav .nav-link:hover { color: white !important; background: rgba(255,255,255,.08); }
.btn-primary { background: linear-gradient(135deg, var(--primary), #a855f7); border: none; border-radius: 10px; font-weight: 600; transition: var(--transition); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(124,58,237,.4); background: linear-gradient(135deg, var(--primary-dark), #9333ea); }

/* ============================================================
   HERO
   ============================================================ */
.hero-section {
  background: linear-gradient(135deg, #0f0a2e 0%, #1e1b4b 40%, #312e81 70%, #1e40af 100%);
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}
.hero-bg-animation {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(124,58,237,.25) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(37,99,235,.2) 0%, transparent 50%);
  animation: bgPulse 8s ease-in-out infinite alternate;
}
@keyframes bgPulse {
  0% { opacity: .5; }
  100% { opacity: 1; }
}
.hero-content { position: relative; z-index: 1; }
.badge-pill {
  display: inline-flex; align-items: center;
  background: rgba(124,58,237,.3);
  border: 1px solid rgba(124,58,237,.5);
  color: #c4b5fd;
  padding: 6px 14px; border-radius: 50px; font-size: .85rem; font-weight: 500;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: white;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}
.gradient-text {
  background: linear-gradient(135deg, #c084fc, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle { font-size: 1.1rem; color: rgba(255,255,255,.7); max-width: 520px; margin-bottom: 1.5rem; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-badge {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.85);
  padding: 5px 12px; border-radius: 50px; font-size: .8rem; font-weight: 500;
}
.btn-hero-primary {
  background: linear-gradient(135deg, var(--primary), #a855f7);
  color: white; border: none; border-radius: 12px;
  padding: 12px 28px; font-weight: 600; font-size: 1rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(124,58,237,.4);
}
.btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(124,58,237,.5); color: white; }
.btn-hero-outline {
  background: transparent; color: white;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 12px; padding: 10px 24px; font-weight: 600; font-size: 1rem;
  transition: var(--transition);
}
.btn-hero-outline:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.6); color: white; }

/* Code Window Hero */
.hero-code-window {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,.5);
  border: 1px solid rgba(255,255,255,.1);
  margin-top: 2rem;
}
.code-window-bar {
  background: #2a2a3e;
  padding: 12px 16px;
  display: flex; align-items: center; gap: 8px;
}
.dot { width: 13px; height: 13px; border-radius: 50%; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28ca41; }
.code-window-title { color: rgba(255,255,255,.4); font-size: .8rem; margin-left: auto; font-family: 'Fira Code', monospace; }
.code-window-body {
  background: #0f0f1e;
  padding: 24px;
  margin: 0;
  font-family: 'Fira Code', monospace;
  font-size: .85rem;
  line-height: 1.8;
  overflow-x: auto;
}
.c-comment { color: #6a9955; }
.c-keyword { color: #c586c0; }
.c-class { color: #4ec9b0; }
.c-var { color: #9cdcfe; }
.c-func { color: #dcdcaa; }
.c-type { color: #4ec9b0; }
.c-string { color: #ce9178; }
.hero-wave { position: absolute; bottom: 0; left: 0; width: 100%; line-height: 0; }
.hero-wave svg { width: 100%; height: 60px; }

/* ============================================================
   STATS
   ============================================================ */
.stat-card {
  background: white; border-radius: var(--radius-sm);
  padding: 20px; text-align: center;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--card-hover-shadow); }
.stat-icon {
  width: 50px; height: 50px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin: 0 auto 10px;
}
.bg-primary-soft { background: rgba(124,58,237,.1); }
.bg-success-soft { background: rgba(5,150,105,.1); }
.bg-warning-soft { background: rgba(245,158,11,.1); }
.bg-danger-soft { background: rgba(220,38,38,.1); }
.stat-number { font-size: 2.2rem; font-weight: 900; color: var(--dark); line-height: 1; }
.stat-label { font-size: .8rem; color: #6b7280; font-weight: 500; margin-top: 4px; }

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-badge {
  display: inline-block;
  background: rgba(124,58,237,.1);
  color: var(--primary);
  border: 1px solid rgba(124,58,237,.2);
  padding: 4px 14px; border-radius: 50px;
  font-size: .8rem; font-weight: 600; letter-spacing: .5px;
  text-transform: uppercase; margin-bottom: 12px;
}
.section-badge-light {
  display: inline-block;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.8);
  border: 1px solid rgba(255,255,255,.2);
  padding: 4px 14px; border-radius: 50px;
  font-size: .8rem; font-weight: 600; letter-spacing: .5px;
  text-transform: uppercase; margin-bottom: 12px;
}
.section-title { font-size: clamp(1.6rem,3vw,2.4rem); font-weight: 800; color: #111827; line-height: 1.2; }
.section-subtitle { color: #6b7280; font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.feature-card {
  background: white; border-radius: var(--radius);
  padding: 28px; height: 100%;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,.04);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--card-hover-shadow); }
.feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: white; margin-bottom: 16px;
}
.feature-card h5 { font-weight: 700; color: #111827; margin-bottom: 8px; }
.feature-card p { color: #6b7280; font-size: .9rem; margin: 0; line-height: 1.6; }

/* ============================================================
   MODULE CARDS
   ============================================================ */
.module-card {
  background: white; border-radius: var(--radius);
  padding: 24px; height: 100%;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(0,0,0,.05);
  transition: var(--transition);
  display: flex; flex-direction: column;
}
.module-card:hover { transform: translateY(-4px); box-shadow: var(--card-hover-shadow); }
.module-number { font-size: .75rem; font-weight: 700; color: #9ca3af; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 8px; }
.module-icon { font-size: 1.8rem; margin-bottom: 12px; }
.module-title { font-size: 1.05rem; font-weight: 700; color: #111827; margin-bottom: 8px; }
.module-desc { font-size: .88rem; color: #6b7280; flex: 1; margin-bottom: 12px; }
.module-topics { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.topic-tag {
  background: #f3f4f6; color: #374151;
  padding: 3px 10px; border-radius: 50px; font-size: .75rem; font-weight: 500;
}
.module-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.module-duration { font-size: .8rem; color: #9ca3af; }
.btn-purple-outline { color: var(--primary); border: 1px solid var(--primary); border-radius: 8px; }
.btn-purple-outline:hover { background: var(--primary); color: white; }
.text-purple { color: var(--primary) !important; }

/* ============================================================
   PROJECT CARDS
   ============================================================ */
.project-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,.2);
  transition: var(--transition);
}
.project-card:hover { transform: translateY(-4px); box-shadow: 0 16px 60px rgba(0,0,0,.3); }
.project-header { padding: 28px; position: relative; }
.project-badge {
  position: absolute; top: 16px; right: 16px;
  background: rgba(255,255,255,.2); color: white;
  font-size: .7rem; font-weight: 700; letter-spacing: 1.5px;
  padding: 4px 10px; border-radius: 50px;
}
.project-title { color: white; font-size: 1.4rem; font-weight: 800; margin-bottom: 4px; }
.project-subtitle { color: rgba(255,255,255,.7); font-size: .88rem; margin: 0; }
.project-body { background: white; padding: 24px; }
.project-feature { font-size: .875rem; color: #374151; font-weight: 500; }
.project-stack { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-tag { background: #f3f4f6; color: #374151; padding: 4px 10px; border-radius: 50px; font-size: .75rem; font-weight: 500; }
.btn-purple { background: linear-gradient(135deg, var(--primary), #a855f7); color: white; border: none; border-radius: 10px; font-weight: 600; transition: var(--transition); }
.btn-purple:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(124,58,237,.4); color: white; }

/* ============================================================
   TECH CARDS
   ============================================================ */
.tech-card {
  background: white; border-radius: var(--radius-sm);
  padding: 20px 12px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,.04);
}
.tech-card:hover { transform: translateY(-4px); box-shadow: var(--card-hover-shadow); }
.tech-logo { font-size: 2.2rem; margin-bottom: 8px; }
.php-logo { color: #777bb4; }
.mysql-logo { color: #00758f; }
.bs-logo { color: #7952b3; }
.jq-logo { color: #0769ad; }
.fa-logo { color: #339af0; }
.xampp-logo { color: #fb7d00; }
.tech-name { font-weight: 700; color: #111827; font-size: .9rem; }
.tech-desc { font-size: .75rem; color: #9ca3af; }

/* ============================================================
   LEARN / PREREQ
   ============================================================ */
.learn-item { padding: 8px 0; font-size: .9rem; display: flex; align-items: center; color: #374151; border-bottom: 1px solid #f3f4f6; }
.prereq-card { background: white; border-radius: var(--radius-sm); padding: 20px; box-shadow: var(--card-shadow); height: 100%; }
.level-bar { height: 6px; background: #f3f4f6; border-radius: 50px; margin: 8px 0; }
.level-fill { height: 100%; background: linear-gradient(90deg, var(--primary), #a855f7); border-radius: 50px; }

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background: 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='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%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/g%3E%3C/svg%3E");
}
.cta-icon { font-size: 3.5rem; color: rgba(255,255,255,.5); display: block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer-dark { background: #0f0a2e; }
.footer-links { }
.footer-links li { margin-bottom: 6px; }
.footer-links a { color: rgba(255,255,255,.45); font-size: .88rem; transition: color .2s; }
.footer-links a:hover { color: rgba(255,255,255,.85); }

/* ============================================================
   COURS LAYOUT — Sidebar + Content
   ============================================================ */
.cours-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
  padding-top: 66px;
}
@media (max-width: 992px) {
  .cours-layout { grid-template-columns: 1fr; }
  /* sidebar visibility/animation handled in the responsive section below */
}
.cours-sidebar {
  background: #1e1b4b;
  position: fixed; top: 66px; left: 0; bottom: 0;
  width: 280px; overflow-y: auto;
  border-right: 1px solid rgba(255,255,255,.06);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.1) transparent;
  z-index: 100;
}
.cours-sidebar::-webkit-scrollbar { width: 4px; }
.cours-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 50px; }
.sidebar-brand { padding: 20px 16px; border-bottom: 1px solid rgba(255,255,255,.06); }
.sidebar-brand a { color: white; font-size: .95rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.sidebar-section { padding: 20px 12px 8px; }
.sidebar-section-title { font-size: .7rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: rgba(255,255,255,.3); padding: 0 8px; margin-bottom: 6px; }
.sidebar-nav { list-style: none; padding: 0; margin: 0; }
.sidebar-nav li a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 10px;
  color: rgba(255,255,255,.55); font-size: .875rem; font-weight: 500;
  transition: var(--transition); margin-bottom: 2px;
}
.sidebar-nav li a:hover { color: white; background: rgba(255,255,255,.08); }
.sidebar-nav li a.active { color: white; background: rgba(124,58,237,.35); font-weight: 600; }
.sidebar-nav li a .badge { font-size: .65rem; }
.cours-main { margin-left: 0px; min-height: calc(100vh - 66px); }
@media (max-width: 992px) { .cours-main { margin-left: 0; } }

/* ============================================================
   MODULE CONTENT
   ============================================================ */
.module-hero {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  padding: 48px 40px;
  color: white;
}
.module-hero-badge { font-size: .75rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: #a78bfa; margin-bottom: 8px; }
.module-hero h1 { font-size: clamp(1.6rem,3vw,2.5rem); font-weight: 800; margin-bottom: 12px; }
.module-hero p { color: rgba(255,255,255,.7); font-size: 1rem; max-width: 600px; margin-bottom: 16px; }
.module-hero-meta { display: flex; flex-wrap: wrap; gap: 16px; }
.meta-item { display: flex; align-items: center; gap: 6px; color: rgba(255,255,255,.6); font-size: .85rem; }
.module-content { padding: 40px; }
@media (max-width: 768px) { .module-content { padding: 24px 16px; } .module-hero { padding: 32px 20px; } }

/* Section anchors */
.module-content h2 {
  font-size: 1.6rem; font-weight: 800; color: #111827;
  margin: 2.5rem 0 1rem;
  padding-bottom: 10px;
  border-bottom: 3px solid #f3f4f6;
  position: relative;
}
.module-content h2::before {
  content: '';
  position: absolute; bottom: -3px; left: 0;
  width: 50px; height: 3px;
  background: linear-gradient(90deg, var(--primary), #a855f7);
  border-radius: 2px;
}
.module-content h3 { font-size: 1.2rem; font-weight: 700; color: #1f2937; margin: 2rem 0 .75rem; }
.module-content h4 { font-size: 1rem; font-weight: 700; color: #374151; margin: 1.5rem 0 .5rem; }
.module-content p { color: #4b5563; line-height: 1.8; margin-bottom: 1rem; }
.module-content ul, .module-content ol { color: #4b5563; line-height: 1.8; margin-bottom: 1rem; padding-left: 1.5rem; }
.module-content li { margin-bottom: 4px; }

/* Info boxes */
.info-box {
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 1.5rem 0;
  display: flex; gap: 14px; align-items: flex-start;
  font-size: .9rem;
}
.info-box .info-icon { font-size: 1.2rem; margin-top: 1px; flex-shrink: 0; }
.info-box.tip { background: #f0fdf4; border-left: 4px solid #22c55e; color: #166534; }
.info-box.warning { background: #fffbeb; border-left: 4px solid #f59e0b; color: #92400e; }
.info-box.danger { background: #fef2f2; border-left: 4px solid #ef4444; color: #991b1b; }
.info-box.info { background: #eff6ff; border-left: 4px solid #3b82f6; color: #1e40af; }
.info-box.note { background: #faf5ff; border-left: 4px solid #8b5cf6; color: #5b21b6; }

/* Code blocks */
.code-block-wrapper { position: relative; margin: 1.5rem 0; border-radius: var(--radius-sm); overflow: hidden; }
.code-block-header {
  background: #2a2a3e; padding: 10px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.code-block-lang { font-size: .75rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: #6366f1; }
.code-copy-btn {
  background: transparent; border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.5); border-radius: 6px;
  padding: 3px 10px; font-size: .75rem; cursor: pointer; transition: var(--transition);
}
.code-copy-btn:hover { background: rgba(255,255,255,.1); color: white; }
pre.code-block {
  background: var(--code-bg);
  margin: 0; padding: 20px;
  font-family: 'Fira Code', monospace;
  font-size: .845rem;
  line-height: 1.75;
  overflow-x: auto;
  color: #cdd6f4;
}
pre.code-block .kw { color: #cba6f7; }      /* keyword */
pre.code-block .fn { color: #89dceb; }      /* function */
pre.code-block .str { color: #a6e3a1; }     /* string */
pre.code-block .num { color: #fab387; }     /* number */
pre.code-block .cmt { color: #585b70; font-style: italic; }  /* comment */
pre.code-block .var { color: #cdd6f4; }     /* variable */
pre.code-block .cls { color: #89b4fa; }     /* class */
pre.code-block .tag { color: #f38ba8; }     /* html tag */
pre.code-block .atr { color: #fab387; }     /* attribute */
pre.code-block .op  { color: #89dceb; }     /* operator */
pre.code-block .php-open { color: #cba6f7; font-weight: bold; }  /* <?php */

/* Output box */
.output-box {
  background: #0f0f1e;
  border: 1px solid #2a2a4e;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-family: 'Fira Code', monospace;
  font-size: .845rem;
  color: #a6e3a1;
  margin: 1rem 0;
}
.output-box .output-label { color: #585b70; font-size: .75rem; margin-bottom: 8px; display: block; }

/* Exercise card */
.exercise-card {
  background: linear-gradient(135deg, #faf5ff, #eff6ff);
  border: 2px dashed #c4b5fd;
  border-radius: var(--radius);
  padding: 24px;
  margin: 2rem 0;
}
.exercise-card .exercise-title { font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }

/* Browser mockup */
.browser-mockup {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,.15);
  border: 1px solid #e5e7eb;
  margin: 1.5rem 0;
}
.browser-toolbar {
  background: #f1f3f4;
  padding: 10px 14px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid #e5e7eb;
}
.browser-dots { display: flex; gap: 6px; }
.browser-dots span { width: 12px; height: 12px; border-radius: 50%; display: block; }
.bd-red { background: #ff5f57; }
.bd-yellow { background: #ffbd2e; }
.bd-green { background: #28ca41; }
.browser-url {
  flex: 1; background: white; border: 1px solid #dadce0;
  border-radius: 20px; padding: 4px 12px; font-size: .78rem; color: #5f6368;
  font-family: 'Fira Code', monospace;
}
.browser-content { background: white; }

/* Nav pills for modules */
.module-nav-pills .nav-link { border-radius: 10px; color: #374151; font-size: .875rem; padding: 8px 16px; }
.module-nav-pills .nav-link.active { background: var(--primary); color: white; }

/* Cours navigation bar */
.cours-nav-bar {
  background: white;
  border-top: 1px solid #e5e7eb;
  padding: 16px 40px;
  display: flex; justify-content: space-between; align-items: center;
}
.btn-nav-cours { padding: 8px 18px; border-radius: 10px; font-weight: 600; font-size: .875rem; transition: var(--transition); }

/* Table custom */
.table-cours { font-size: .875rem; }
.table-cours thead th { background: var(--dark); color: white; font-weight: 600; padding: 10px 14px; }
.table-cours tbody tr:hover { background: #f8fafc; }
.table-cours td, .table-cours th { padding: 10px 14px; vertical-align: middle; }

/* Inline code */
.module-content code:not(pre code) {
  background: #f1f5f9; color: #6366f1;
  padding: 2px 6px; border-radius: 4px; font-size: .85em;
  border: 1px solid #e2e8f0;
}

/* Steps */
.step { display: flex; gap: 16px; margin-bottom: 20px; }
.step-number { width: 34px; height: 34px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem; flex-shrink: 0; }
.step-content { flex: 1; }
.step-title { font-weight: 700; color: #111827; margin-bottom: 4px; }

/* Accordion custom */
.accordion-cours .accordion-button { font-weight: 600; font-size: .9rem; background: #f8fafc; color: #111827; }
.accordion-cours .accordion-button:not(.collapsed) { background: var(--primary); color: white; box-shadow: none; }
.accordion-cours .accordion-button::after { filter: none; }
.accordion-cours .accordion-button:not(.collapsed)::after { filter: brightness(0) invert(1); }
.accordion-cours .accordion-body { font-size: .875rem; background: #fafafa; }

/* ============================================================
   RESPONSIVE — Bootstrap 5 breakpoints
   xs  < 576px
   sm  576–767px
   md  768–991px
   lg  992–1199px
   xl  ≥ 1200px
   ============================================================ */

/* ── Large (≥ 992px) : déjà géré par les classes Bootstrap ── */

/* ── Medium (< 992px) ── */
@media (max-width: 991.98px) {

  /* Navbar */
  #mainNav .container-xl { padding-inline: 16px; }

  /* Hero */
  .hero-section { min-height: auto; padding-bottom: 60px; }
  .hero-content { text-align: center; }
  .hero-subtitle { max-width: 100%; }
  .hero-badges { justify-content: center; }
  .d-flex.flex-wrap.gap-3 { justify-content: center; }

  /* Code window (hero) : masqué via d-none d-lg-block dans le HTML */

  /* Section headers */
  .section-subtitle { font-size: .95rem; }

  /* Feature / Module / Tech cards */
  .feature-card { padding: 22px; }
  .module-card  { padding: 20px; }

  /* Cours layout */
  .cours-layout { grid-template-columns: 1fr; padding-top: 56px; }

  .cours-sidebar {
    transform: translateX(-100%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    width: 280px;
    top: 0; /* recouvre tout depuis le haut */
    z-index: 1055;
  }
  .cours-sidebar.show {
    transform: translateX(0);
    display: block;
  }
  /* Overlay sombre derrière la sidebar */
  .sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 1054;
  }
  .sidebar-overlay.show { display: block; }

  .cours-main { margin-left: 0; }

  /* Nav bar de module */
  .cours-nav-bar { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .btn-nav-cours { font-size: .8rem; padding: 7px 14px; }

  /* Module hero */
  .module-hero { padding: 28px 20px; }
  .module-hero h1 { font-size: 1.6rem; }
  .module-hero-meta { gap: 10px; }
  .meta-item { font-size: .8rem; }

  /* Module content */
  .module-content { padding: 24px 16px; }
  .module-content h2 { font-size: 1.35rem; margin-top: 2rem; }
  .module-content h3 { font-size: 1.1rem; }

  /* Browser mockup */
  .browser-mockup { overflow-x: auto; }
  .browser-content { overflow-x: auto; min-width: 0; }

  /* Tables */
  .table-responsive-cours { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .table-cours { min-width: 520px; }

  /* Code blocks */
  pre.code-block { font-size: .78rem; padding: 16px; }

  /* Info boxes */
  .info-box { flex-direction: column; gap: 8px; }
  .info-box .info-icon { font-size: 1rem; }

  /* Project cards */
  .project-header { padding: 20px; }
  .project-body   { padding: 20px; }
  .project-title  { font-size: 1.2rem; }

  /* CTA buttons */
  .btn-hero-primary,
  .btn-hero-outline { width: 100%; text-align: center; }
}

/* ── Small (< 768px) ── */
@media (max-width: 767.98px) {

  /* Typographie héro */
  .hero-title    { font-size: clamp(1.8rem, 7vw, 2.4rem); letter-spacing: -.5px; }
  .hero-subtitle { font-size: .95rem; }

  /* Stats */
  .stat-number { font-size: 1.7rem; }
  .stat-card   { padding: 16px 10px; }
  .stat-icon   { width: 42px; height: 42px; font-size: 1rem; }

  /* Section */
  .section-title { font-size: 1.5rem; }

  /* Module cards : full-width sous md */
  .module-topics { gap: 4px; }
  .topic-tag { font-size: .7rem; padding: 2px 8px; }
  .module-footer { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* Tech cards : 3 par ligne */
  .tech-logo { font-size: 1.8rem; }
  .tech-name { font-size: .82rem; }

  /* Exercice card */
  .exercise-card { padding: 18px; }

  /* Steps */
  .step { gap: 12px; }
  .step-number { width: 30px; height: 30px; font-size: .78rem; }

  /* Code */
  pre.code-block       { font-size: .75rem; padding: 14px 12px; }
  .code-block-header   { padding: 8px 12px; }
  .code-window-body    { font-size: .75rem; padding: 16px; }

  /* Browser mockup url bar */
  .browser-url { font-size: .7rem; }

  /* Cours nav bar */
  .cours-nav-bar { padding: 10px 12px; }
}

/* ── Extra-small (< 576px) ── */
@media (max-width: 575.98px) {

  /* Conteneurs */
  .container, .container-xl { padding-inline: 12px; }

  /* Héro */
  .hero-title    { font-size: 1.75rem; }
  .hero-subtitle { font-size: .9rem; }
  .badge-pill    { font-size: .78rem; padding: 5px 12px; }
  .tech-badge    { font-size: .72rem; padding: 4px 10px; }

  /* Hero buttons stack + pleine largeur */
  .btn-hero-primary, .btn-hero-outline {
    width: 100%;
    justify-content: center;
    padding: 11px 20px;
    font-size: .9rem;
  }

  /* Stats : 2 colonnes */
  .stat-number { font-size: 1.5rem; }

  /* Feature cards */
  .feature-card { padding: 18px; }
  .feature-icon { width: 46px; height: 46px; font-size: 1.15rem; }

  /* Module cards */
  .module-card   { padding: 16px; }
  .module-icon   { font-size: 1.5rem; }
  .module-title  { font-size: .95rem; }

  /* Project cards */
  .project-title  { font-size: 1.05rem; }
  .project-badge  { font-size: .65rem; }
  .project-stack  { gap: 4px; }
  .stack-tag      { font-size: .7rem; padding: 3px 8px; }

  /* Tech grid */
  .tech-card { padding: 14px 8px; }

  /* Module content */
  .module-hero   { padding: 22px 14px; }
  .module-content { padding: 18px 12px; }
  .module-content h2 { font-size: 1.2rem; }
  .module-content h3 { font-size: 1rem; }

  /* Sidebar */
  .cours-sidebar { width: 260px; }
  .sidebar-nav li a { font-size: .82rem; padding: 8px 10px; }

  /* Code */
  pre.code-block     { font-size: .72rem; padding: 12px 10px; }
  .code-window-body  { font-size: .72rem; padding: 14px; }

  /* Nav cours */
  .cours-nav-bar span.d-none { display: none !important; }
  .btn-nav-cours { font-size: .75rem; padding: 6px 12px; }

  /* Info box */
  .info-box { padding: 12px 14px; font-size: .84rem; }

  /* Browser toolbar url : réduite */
  .browser-url { display: none; }
  .browser-toolbar { padding: 8px 12px; }

  /* CTA */
  .cta-icon { font-size: 2.5rem; }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-gradient { background: linear-gradient(135deg, var(--primary), #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.bg-gradient-primary { background: linear-gradient(135deg, var(--primary), #a855f7); }
.rounded-xl { border-radius: var(--radius) !important; }
.shadow-card { box-shadow: var(--card-shadow) !important; }
.fw-800 { font-weight: 800; }
.fw-900 { font-weight: 900; }