@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Playfair+Display:wght@700;800;900&display=swap');

:root {
    --bg: #0a0a14;
    --bg-secondary: #111122;
    --card-bg: #16162a;
    --card-hover: #1e1e3a;
    --accent-blue: #4fc3f7;
    --accent-red: #ef5350;
    --accent-gold: #ffd54f;
    --accent-green: #66bb6a;
    --accent-purple: #ab47bc;
    --accent-orange: #ffa726;
    --text: #e8e8f0;
    --text-muted: #8888a8;
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ============ PARTICULES ============ */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: rgba(79, 195, 247, 0.15);
    border-radius: 50%;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) translateX(0) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px) scale(0.5);
        opacity: 0;
    }
}

/* ============ HERO ============ */
.hero {
    position: relative;
    text-align: center;
    padding: 80px 20px 50px;
    overflow: hidden;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(79,195,247,0.08) 0%, rgba(171,71,188,0.05) 40%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.logo-icon {
    font-size: 2rem;
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.logo-text {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 900;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-blue) 60%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto 30px;
}

/* ============ SEARCH BAR ============ */
.search-bar {
    display: flex;
    align-items: center;
    max-width: 480px;
    margin: 0 auto 30px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 4px 16px;
    transition: all 0.3s;
}

.search-bar:focus-within {
    border-color: rgba(79,195,247,0.4);
    box-shadow: 0 0 20px rgba(79,195,247,0.08);
}

.search-icon {
    font-size: 1rem;
    margin-right: 10px;
    opacity: 0.5;
}

.search-bar input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text);
    font-size: 0.95rem;
    padding: 12px 0;
    outline: none;
    font-family: 'Inter', sans-serif;
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

.search-clear {
    display: none;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.2s;
}

.search-clear:hover {
    background: rgba(239,83,80,0.3);
    color: #fff;
}

/* ============ HERO STATS ============ */
.hero-stats {
    display: inline-flex;
    align-items: center;
    gap: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px 32px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-stat-number {
    font-size: 1.6rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.hero-stat-divider {
    width: 1px;
    height: 30px;
    background: var(--border);
}

/* ============ FILTER BAR ============ */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 20px 40px;
    position: relative;
    z-index: 1;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Inter', sans-serif;
}

.filter-btn:hover {
    color: #fff;
    border-color: var(--border-hover);
    background: var(--card-hover);
    transform: translateY(-1px);
}

.filter-btn.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(79,195,247,0.15), rgba(171,71,188,0.1));
    border-color: rgba(79,195,247,0.3);
    box-shadow: 0 2px 12px rgba(79,195,247,0.1);
}

.filter-icon {
    font-size: 1rem;
}

/* ============ FICHES CONTAINER ============ */
.fiches-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px 40px;
    position: relative;
    z-index: 1;
}

/* ============ NO RESULTS ============ */
.no-results {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.no-results-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.no-results h3 {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.no-results p {
    color: var(--text-muted);
    opacity: 0.6;
    font-size: 0.9rem;
}

/* ============ MATIERE SECTION ============ */
.matiere-section {
    margin-bottom: 50px;
    animation: fadeUp 0.5s ease-out;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.matiere-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.matiere-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.matiere-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 800;
}

.matiere-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.count-number {
    font-weight: 700;
    color: var(--accent-blue);
}

/* ============ FICHES GRID ============ */
.fiches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

/* ============ FICHE CARD ============ */
.fiche-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: block;
}

.fiche-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

.fiche-card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.fiche-card:hover .fiche-card-glow {
    opacity: 0.4;
}

.fiche-card-content {
    position: relative;
    z-index: 2;
    padding: 24px;
}

.fiche-badge {
    display: inline-block;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 8px;
    margin-bottom: 14px;
}

.fiche-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 8px;
    line-height: 1.3;
}

.fiche-desc {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 16px;
    line-height: 1.5;
}

/* Tags */
.fiche-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.tag {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 8px;
    transition: all 0.2s;
}

.fiche-card:hover .tag {
    background: rgba(79,195,247,0.08);
    border-color: rgba(79,195,247,0.15);
    color: var(--accent-blue);
}

/* Footer de la card */
.fiche-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.fiche-progress {
    flex: 1;
}

.progress-track {
    width: 100%;
    max-width: 150px;
    height: 4px;
    background: rgba(255,255,255,0.08);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 4px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    border-radius: 4px;
    transition: width 0.5s;
}

.progress-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.fiche-arrow {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-muted);
    transition: all 0.3s;
}

.fiche-card:hover .fiche-arrow {
    background: var(--accent-blue);
    color: #000;
    transform: translateX(4px);
}

/* ============ EMPTY STATE ============ */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    background: rgba(255,255,255,0.02);
    border: 1px dashed rgba(255,255,255,0.08);
    border-radius: 16px;
}

.empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.3;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.95rem;
    opacity: 0.6;
}

.empty-hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.78rem;
    opacity: 0.4;
    margin-top: 6px;
}

/* ============ FOOTER ============ */
.footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

.footer-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.footer-tip {
    display: inline-block;
    background: rgba(79,195,247,0.06);
    border: 1px solid rgba(79,195,247,0.12);
    border-radius: 12px;
    padding: 12px 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-tip strong {
    color: var(--accent-gold);
}

.footer-tip code {
    background: rgba(255,255,255,0.08);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--accent-blue);
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 600px) {
    .hero {
        padding: 50px 16px 30px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        padding: 12px 20px;
        gap: 16px;
    }

    .hero-stat-number {
        font-size: 1.3rem;
    }

    .fiches-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        gap: 6px;
    }

    .filter-btn {
        padding: 8px 14px;
        font-size: 0.8rem;
    }
}