:root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --accent-cemantix: #3b82f6;
    /* Blue */
    --accent-pedantix: #10b981;
    /* Emerald */
    --accent-morpion: #f59e0b;
    /* Amber */
    --font-main: 'Outfit', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #0f172a 100%);
    z-index: -1;
}

.container {
    max-width: 1200px;
    width: 100%;
    padding: 2rem;
    text-align: center;
    z-index: 1;
}

header {
    margin-bottom: 4rem;
    animation: fadeInDown 1s ease-out;
}

header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem 2rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(10px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card .icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    transition: transform 0.4s ease;
}

.card:hover .icon {
    transform: scale(1.2) rotate(5deg);
}

.card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.5;
}

/* Specific Card Accents */
.card.cemantix:hover {
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.card.cemantix .card-glow {
    background: radial-gradient(circle at center, var(--accent-cemantix), transparent 70%);
}

.card.pedantix:hover {
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
}

.card.pedantix .card-glow {
    background: radial-gradient(circle at center, var(--accent-pedantix), transparent 70%);
}

.card.morpion:hover {
    box-shadow: 0 20px 40px rgba(245, 158, 11, 0.2);
}

.card.morpion .card-glow {
    background: radial-gradient(circle at center, var(--accent-morpion), transparent 70%);
}

.card.puissance4:hover {
    box-shadow: 0 20px 40px rgba(239, 68, 68, 0.2);
}

.card.puissance4 .card-glow {
    background: radial-gradient(circle at center, #ef4444, transparent 70%);
}

.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150%;
    height: 150%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    pointer-events: none;
}

.card:hover .card-glow {
    opacity: 0.15;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }

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

/* EchecExpress Card */
.card.echecexpress:hover {
    box-shadow: 0 20px 40px rgba(168, 85, 247, 0.2);
}

.card.echecexpress .card-glow {
    background: radial-gradient(circle at center, #a855f7, transparent 70%);
}

/* Bataille Navale Card */
.card.bataillenavale:hover {
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.2);
}

.card.bataillenavale .card-glow {
    background: radial-gradient(circle at center, #0ea5e9, transparent 70%);
}

/* Fléchettes Card */
.card.flechettes:hover {
    box-shadow: 0 20px 40px rgba(220, 38, 38, 0.2);
}

.card.flechettes .card-glow {
    background: radial-gradient(circle at center, #dc2626, transparent 70%);
}

/* Billard Card */
.card.billard:hover {
    box-shadow: 0 20px 40px rgba(22, 163, 74, 0.2);
}

.card.billard .card-glow {
    background: radial-gradient(circle at center, #16a34a, transparent 70%);
}

/* Rules Reminder */
.rules-reminder {
    margin-top: 16px;
    padding: 12px;
    background: rgba(26, 90, 138, 0.3);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.rules-reminder h4 {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.rules-reminder ul {
    list-style: none;
    padding: 0;
}

.rules-reminder li {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.rules-reminder li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #fbbf24;
}