:root {
    --acad-primary: #0d9488;
    --acad-primary-dark: #0f766e;
    --acad-primary-light: #14b8a6;
    --acad-black: #0f172a;
    --acad-white: #ffffff;
    --acad-slate: #f8fafc;
    --acad-border: #e5e7eb;
    --acad-text: #1f2937;
    --acad-muted: #64748b;
    --acad-grad: linear-gradient(135deg, #14b8a6 0%, #0d9488 55%, #0f766e 100%);
    --acad-grad-soft: linear-gradient(135deg, rgba(13, 148, 136, 0.12), rgba(15, 118, 110, 0.08));
}

html { scroll-behavior: smooth; }

body.acad-landing {
    font-family: 'Sora', 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--acad-text);
    background: var(--acad-white);
}

/* —— Wordmark AcadStore —— */
.acad-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    line-height: 1;
}
.acad-logo__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    background: var(--acad-primary);
    border-radius: 0.7rem;
    box-shadow: 0 8px 22px rgba(13, 148, 136, 0.28), inset 0 1px 0 rgba(255,255,255,0.2);
    transition: transform .25s ease, box-shadow .25s ease, background .2s ease;
}
.acad-logo:hover .acad-logo__mark {
    transform: translateY(-1px) scale(1.03);
    background: var(--acad-primary-dark);
    box-shadow: 0 12px 28px rgba(13, 148, 136, 0.35);
}
.acad-logo__word {
    font-family: 'Sora', system-ui, sans-serif;
    font-weight: 700;
    letter-spacing: -0.03em;
}
.acad-logo__acad {
    color: var(--acad-primary);
}
.acad-logo__store {
    color: var(--acad-black);
}
.acad-logo--sm .acad-logo__mark { width: 1.75rem; height: 1.75rem; font-size: 0.85rem; border-radius: 0.5rem; }
.acad-logo--sm .acad-logo__word { font-size: 1rem; }
.acad-logo--md .acad-logo__mark { width: 2.25rem; height: 2.25rem; font-size: 1rem; }
.acad-logo--md .acad-logo__word { font-size: 1.2rem; }
.acad-logo--lg .acad-logo__mark { width: 3rem; height: 3rem; font-size: 1.35rem; border-radius: 0.85rem; }
.acad-logo--lg .acad-logo__word { font-size: 1.85rem; }

.acad-hero {
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.45;
    background-image:
        radial-gradient(circle at 15% 20%, rgba(13, 148, 136, 0.1) 0%, transparent 45%),
        radial-gradient(circle at 85% 60%, rgba(15, 118, 110, 0.06) 0%, transparent 40%);
    pointer-events: none;
}

.hero-mockup {
    animation: mockupFloat 5s ease-in-out infinite;
}

@keyframes mockupFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.btn-acad {
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-acad:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(13, 148, 136, 0.22);
}
.btn-acad-primary {
    background: var(--acad-primary);
    color: #fff;
    border: none;
}
.btn-acad-primary:hover {
    background: var(--acad-primary-dark);
}

.stat-card {
    transition: transform .25s ease, box-shadow .25s ease;
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}
.stat-counter { font-variant-numeric: tabular-nums; }

.search-panel {
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
}

.ouvrage-card {
    transition: transform .3s ease, box-shadow .3s ease;
}
.ouvrage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
}
.ouvrage-card .cover-placeholder {
    transition: transform .4s ease;
}
.ouvrage-card:hover .cover-placeholder {
    transform: scale(1.04);
}

.domaine-card {
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.domaine-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(13, 148, 136, 0.12);
    border-color: #99f6e4;
}

.type-pill:hover {
    border-color: #99f6e4;
    background: #f0fdfa;
}

.acad-glass {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(229, 231, 235, 0.95);
}

.acad-section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--acad-primary-dark);
    background: #f0fdfa;
    border: 1px solid #99f6e4;
    border-radius: 999px;
    padding: 0.35rem 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
    .hero-mockup, .btn-acad, .stat-card, .ouvrage-card, .domaine-card {
        animation: none !important;
        transition: none !important;
    }
}