:root {
  --color-bg: #f5f6fa;
  --color-card: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-accent: #7c3aed;
  --color-accent-light: #ede9fe;
  --radius: 20px;
  --shadow: 0 2px 16px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 32px rgba(124,58,237,0.12);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Nunito", system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ── Header ───────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.9); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.site-header .container { display: flex; justify-content: space-between; align-items: center; height: 64px; }
.header-brand { display: flex; align-items: center; gap: 10px; }
.header-logo { font-size: 1.8rem; }
.header-title { font-family: "Fredoka One", sans-serif; font-size: 1.4rem; color: var(--color-accent); }
.header-nav { display: flex; gap: 28px; }
.header-nav a { text-decoration: none; color: var(--color-text-muted); font-weight: 600; font-size: 0.95rem; transition: color 0.2s; }
.header-nav a:hover { color: var(--color-accent); }

/* ── Hero ─────────────────────────────────────── */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(135deg, #7c3aed, #3b82f6, #06b6d4);
  color: white; border-radius: 0 0 40px 40px;
}
.hero-content { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-badge { display: inline-block; padding: 6px 16px; background: rgba(255,255,255,0.2); border-radius: 99px; font-size: 0.85rem; font-weight: 700; margin-bottom: 20px; }
.hero h1 { font-family: "Fredoka One", sans-serif; font-size: 3rem; line-height: 1.15; margin-bottom: 20px; }
.hero-accent { background: linear-gradient(90deg, #fbbf24, #f97316); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.15rem; opacity: 0.9; margin-bottom: 28px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-stats { display: flex; gap: 24px; flex-wrap: wrap; }
.hero-stat { font-size: 0.9rem; opacity: 0.8; }
.hero-stat strong { font-size: 1.3rem; display: block; opacity: 1; }

.btn { display: inline-block; padding: 14px 28px; border-radius: 14px; font-size: 1rem; font-weight: 700; font-family: inherit; text-decoration: none; cursor: pointer; transition: all 0.25s; border: none; }
.btn-primary { background: white; color: var(--color-accent); box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: white; }

.hero-visual { display: flex; justify-content: center; }
.hero-mockup { background: rgba(255,255,255,0.1); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.2); border-radius: 24px; padding: 24px; width: 320px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); position: relative; }
.mockup-header { font-family: "Fredoka One", sans-serif; font-size: 1.1rem; margin-bottom: 16px; text-align: center; }
.mockup-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mockup-card { padding: 14px 10px; border-radius: 14px; font-size: 0.85rem; font-weight: 700; text-align: center; }
.mc-purple { background: rgba(139,92,246,0.3); } .mc-blue { background: rgba(59,130,246,0.3); }
.mc-green { background: rgba(16,185,129,0.3); } .mc-orange { background: rgba(249,115,22,0.3); }
.mockup-mascot { position: absolute; bottom: -16px; right: -16px; font-size: 2.5rem; filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2)); }

/* ── Sections ─────────────────────────────────── */
.section { padding: 80px 0; }
.section-alt { background: white; }
.section-title { font-family: "Fredoka One", sans-serif; font-size: 2.2rem; text-align: center; margin-bottom: 8px; }
.section-subtitle { text-align: center; color: var(--color-text-muted); font-size: 1.1rem; margin-bottom: 48px; }

/* ── Modes de jeu (grille 3 col) ──────────────── */
.modes-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mode-card-v2 {
  background: var(--color-card); border-radius: var(--radius); padding: 28px 22px;
  box-shadow: var(--shadow); border: 2px solid transparent; transition: all 0.3s;
}
.mode-card-v2:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.mcv2-icon { font-size: 2.5rem; margin-bottom: 12px; }
.mode-card-v2 h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; }
.mode-card-v2 p { color: var(--color-text-muted); font-size: 0.92rem; line-height: 1.5; margin-bottom: 12px; }
.mcv2-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.mcv2-tags span {
  padding: 3px 10px; border-radius: 99px; font-size: 0.75rem; font-weight: 700;
  background: color-mix(in srgb, var(--accent) 10%, white); color: var(--accent);
}

/* ── Programme scolaire ───────────────────────── */
.programme-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }
.prog-group-title { font-family: "Fredoka One", sans-serif; font-size: 1.2rem; margin-bottom: 12px; }
.prog-card { background: var(--color-card); border-radius: 14px; padding: 14px 16px; margin-bottom: 10px; box-shadow: var(--shadow); border-left: 4px solid var(--color-accent); }
.prog-level { font-weight: 800; font-size: 1rem; color: var(--color-accent); }
.prog-desc { font-size: 0.85rem; color: var(--color-text-muted); margin: 4px 0; }
.prog-ops { font-size: 0.78rem; font-weight: 700; color: var(--color-text-muted); opacity: 0.7; }
.prog-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.prog-feat { padding: 12px 16px; background: var(--color-card); border-radius: 12px; font-size: 0.92rem; font-weight: 600; box-shadow: var(--shadow); }

/* ── Mode enseignant ──────────────────────────── */
.teacher-flow { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; justify-content: center; }
.flow-step { flex: 1; min-width: 180px; text-align: center; background: var(--color-card); border-radius: var(--radius); padding: 24px 16px; box-shadow: var(--shadow); position: relative; }
.flow-num { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); width: 28px; height: 28px; background: var(--color-accent); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 0.85rem; }
.flow-icon { font-size: 2.2rem; margin-bottom: 8px; margin-top: 8px; }
.flow-step h3 { font-size: 1rem; font-weight: 800; margin-bottom: 6px; }
.flow-step p { font-size: 0.85rem; color: var(--color-text-muted); }
.flow-arrow { font-size: 1.5rem; color: var(--color-accent); align-self: center; font-weight: 800; }

.teacher-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tf-card { background: var(--color-card); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); text-align: center; }
.tf-icon { font-size: 2rem; margin-bottom: 10px; }
.tf-card h4 { font-size: 1rem; font-weight: 800; margin-bottom: 6px; }
.tf-card p { font-size: 0.88rem; color: var(--color-text-muted); }

/* ── Mode en ligne ────────────────────────────── */
.online-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 32px; }
.online-card { background: var(--color-card); border-radius: var(--radius); padding: 24px 18px; box-shadow: var(--shadow); text-align: center; transition: all 0.25s; }
.online-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.ol-icon { font-size: 2.5rem; margin-bottom: 10px; }
.online-card h3 { font-size: 1.05rem; font-weight: 800; margin-bottom: 6px; }
.online-card p { font-size: 0.88rem; color: var(--color-text-muted); }
.ranking-preview { text-align: center; padding: 20px; background: var(--color-accent-light); border-radius: var(--radius); }
.ranking-preview h3 { font-size: 1.2rem; margin-bottom: 4px; }
.ranking-preview p { font-size: 0.92rem; color: var(--color-text-muted); }

/* ── Extras ───────────────────────────────────── */
.extras-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.extra-item { padding: 14px 16px; background: var(--color-card); border-radius: 14px; font-size: 0.9rem; box-shadow: var(--shadow); transition: transform 0.2s; }
.extra-item:hover { transform: translateY(-2px); }

/* ── Téléchargement ───────────────────────────── */
.section-download { background: linear-gradient(135deg, #7c3aed, #3b82f6); color: white; }
.download-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 700px; margin: 0 auto 32px; }
.download-cards-3 { grid-template-columns: repeat(3, 1fr); max-width: 900px; }
.download-card { background: white; border-radius: var(--radius); padding: 36px 28px; text-align: center; color: var(--color-text); box-shadow: 0 8px 32px rgba(0,0,0,0.15); }
.download-icon { font-size: 3rem; margin-bottom: 12px; }
.download-card h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 6px; }
.download-card p { color: var(--color-text-muted); margin-bottom: 20px; }
.btn-download { display: block; background: var(--color-accent); color: white; padding: 14px; border-radius: 14px; font-weight: 700; text-decoration: none; margin-bottom: 10px; transition: all 0.25s; }
.btn-download:hover { background: #6d28d9; transform: translateY(-2px); }
.download-size { font-size: 0.8rem; color: var(--color-text-muted); }
.download-note { text-align: center; max-width: 600px; margin: 0 auto; font-size: 0.92rem; color: rgba(255,255,255,0.85); }
.download-note strong { color: white; }

/* ── Notice d'installation ────────────────────── */
.install-notice { max-width: 900px; margin: 40px auto 0; background: rgba(255,255,255,0.1); border-radius: var(--radius); padding: 32px; backdrop-filter: blur(8px); }
.install-notice h3 { text-align: center; margin-bottom: 24px; font-size: 1.3rem; }
.install-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.install-item { background: rgba(255,255,255,0.08); border-radius: 14px; padding: 20px; }
.install-item h4 { font-size: 1.1rem; margin-bottom: 12px; }
.install-item ol { padding-left: 20px; display: flex; flex-direction: column; gap: 6px; font-size: 0.88rem; color: rgba(255,255,255,0.85); }
.install-item code { background: rgba(255,255,255,0.15); padding: 1px 6px; border-radius: 4px; font-size: 0.85em; }

/* ── Footer ───────────────────────────────────── */
.site-footer { background: #1e1b2e; color: #94a3b8; padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { margin-top: 12px; line-height: 1.6; }
.footer-brand .header-title { color: #a78bfa; }
.footer-links, .footer-contact { display: flex; flex-direction: column; gap: 8px; }
.footer-links h4, .footer-contact h4 { color: white; font-size: 1rem; margin-bottom: 8px; }
.footer-links a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: #a78bfa; }
.footer-contact p { font-size: 0.9rem; }
.footer-legal { margin-bottom: 30px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.82rem; line-height: 1.7; }
.footer-legal h4 { color: white; margin-bottom: 12px; }
.footer-legal p { margin-bottom: 6px; }
.footer-legal strong { color: #cbd5e1; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; font-size: 0.85rem; }

/* ── Responsive ───────────────────────────────── */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 2.2rem; } .hero-buttons, .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .modes-grid-3 { grid-template-columns: 1fr 1fr; }
  .programme-grid { grid-template-columns: 1fr; }
  .teacher-flow { flex-direction: column; align-items: center; } .flow-arrow { transform: rotate(90deg); }
  .teacher-features, .online-grid { grid-template-columns: 1fr 1fr; }
  .extras-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .header-nav { display: none; }
  .prog-features { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .modes-grid-3, .teacher-features, .online-grid { grid-template-columns: 1fr; }
  .download-cards, .download-cards-3 { grid-template-columns: 1fr; }
  .install-grid { grid-template-columns: 1fr; }
  .extras-grid { grid-template-columns: 1fr; }
}