/* Siya9a Code — Cours en classe
 * Beamer-ready: huge fonts, high contrast, generous spacing.
 */
:root {
  --primary:       #C1272D;
  --primary-dark:  #8A1B20;
  --green:         #006233;
  --gold:          #C99A2E;
  --ink:           #0F1A2A;
  --ink-soft:      #4B5563;
  --line:          #E6E8EE;
  --bg:            #FAFBFD;
  --card:          #FFFFFF;
  --module-blue:   #2563EB;
  --module-orange: #EA580C;
  --shadow:        0 10px 30px -12px rgba(15, 26, 42, .15);
  --shadow-hover:  0 20px 50px -20px rgba(15, 26, 42, .30);
  --radius:        18px;
  --gap:           20px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; min-height: 100dvh; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
[data-lang="ar"] { font-family: 'Tajawal', 'Cairo', system-ui, sans-serif; }
[data-lang="ar"] .home-main { direction: rtl; }

/* ============= TOPBAR ============= */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 38px; height: 38px; border-radius: 9px; background: #fff; padding: 2px; box-shadow: var(--shadow); }
.brand-name { font-weight: 800; font-size: 17px; letter-spacing: -.01em; color: var(--primary); }
.brand-tag { font-size: 12px; color: var(--ink-soft); margin-left: 6px; padding: 3px 9px; border: 1px solid var(--line); border-radius: 20px; }
.lang-toggle {
  border: 1px solid var(--line); background: #fff; padding: 8px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700; color: var(--ink); display: inline-flex; gap: 6px; align-items: center;
}
.lang-toggle .lang-sep { color: var(--line); }
.lang-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ============= HOME ============= */
.home-main { max-width: 1280px; margin: 0 auto; padding: 28px 22px 60px; }
.hero { padding: 30px 6px 18px; }
.hero-title { font-size: clamp(28px, 4vw, 44px); font-weight: 900; letter-spacing: -0.02em; margin: 0 0 8px; }
.hero-sub { font-size: 16px; color: var(--ink-soft); margin: 0; }

.tile-grid {
  display: grid; gap: var(--gap);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  margin-top: 22px;
}
.tile {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 220px; padding: 26px;
  border-radius: var(--radius); background: var(--card);
  box-shadow: var(--shadow); border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .18s ease, box-shadow .2s ease;
  cursor: pointer; isolation: isolate;
}
.tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.tile:active { transform: translateY(-1px); }
.tile::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 8px; background: var(--tile-color, var(--primary));
}
.tile::after {
  content: ""; position: absolute; top: -30px; right: -30px; width: 180px; height: 180px;
  background: radial-gradient(circle, color-mix(in srgb, var(--tile-color, var(--primary)) 14%, transparent), transparent 70%);
  z-index: -1;
}
.tile-num {
  font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--tile-color, var(--primary)); margin-bottom: 4px;
}
.tile-title { font-size: 24px; font-weight: 800; letter-spacing: -.01em; line-height: 1.1; margin: 0 0 6px; color: var(--ink); }
.tile-sub { font-size: 14px; color: var(--ink-soft); margin: 0 0 14px; }
.tile-foot { display: flex; align-items: center; justify-content: space-between; }
.tile-count { font-size: 12px; color: var(--ink-soft); }
.tile-arrow {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 999px;
  background: var(--tile-color, var(--primary)); color: #fff; font-size: 18px; font-weight: 800;
}
.tile-icon {
  position: absolute; top: 20px; right: 20px; opacity: .14;
  width: 70px; height: 70px; color: var(--tile-color, var(--primary));
}

.home-footer { margin-top: 40px; text-align: center; font-size: 13px; color: var(--ink-soft); }

/* AR overrides on home */
[data-lang="ar"] .hero-title,
[data-lang="ar"] .hero-sub,
[data-lang="ar"] .tile-title,
[data-lang="ar"] .tile-sub { font-family: 'Tajawal', 'Cairo', system-ui, sans-serif; }
[data-lang="ar"] .tile { direction: rtl; }
[data-lang="ar"] .tile::before { left: auto; right: 0; }
[data-lang="ar"] .tile::after { right: auto; left: -30px; }
[data-lang="ar"] .tile-icon { right: auto; left: 20px; }
[data-lang="ar"] .tile-foot { flex-direction: row-reverse; }

/* Mobile tweaks */
@media (max-width: 640px) {
  .tile-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .tile { min-height: 170px; padding: 18px; }
  .tile-title { font-size: 19px; }
  .tile-sub { font-size: 12px; }
  .brand-tag { display: none; }
  .home-main { padding: 18px 14px 40px; }
  .hero { padding: 14px 4px 6px; }
}