:root {
    --bg-top: #0c1028;
    --bg-bottom: #1b1f4a;
    --surface: rgba(10, 15, 36, 0.9);
    --surface-soft: rgba(18, 30, 58, 0.8);
    --text: #f5f8ff;
    --text-soft: #d0dcff;
    --line: rgba(97, 199, 255, 0.35);
    --accent: #ff9f1c;
    --accent-2: #00d5ff;
    --shadow: 0 16px 34px rgba(0, 0, 0, 0.38);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    padding: 20px 12px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: "Rajdhani", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 13% 14%, rgba(0, 213, 255, 0.16), transparent 35%),
        radial-gradient(circle at 86% 10%, rgba(255, 159, 28, 0.2), transparent 34%),
        linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

header {
    width: min(1100px, 96vw);
    height: 240px;
    border-radius: 24px 24px 0 0;
    border: 3px solid var(--accent);
    border-bottom: none;
    box-shadow: var(--shadow);
    background-image:
        linear-gradient(to top, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.08)),
        url("../../../assets/images/baniere.png");
    background-size: cover;
    background-position: center;
}

.game-page {
    width: min(1100px, 96vw);
    margin-bottom: 34px;
    border: 3px solid var(--accent);
    border-top: none;
    border-radius: 0 0 24px 24px;
    padding: 20px 14px 28px;
    background: linear-gradient(160deg, rgba(7, 14, 34, 0.94), rgba(14, 27, 56, 0.9));
    box-shadow: var(--shadow);
    display: grid;
    gap: 14px;
}

.hero {
    text-align: center;
}

.badge {
    margin: 0;
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid rgba(0, 213, 255, 0.5);
    background: rgba(0, 213, 255, 0.15);
    color: #cff9ff;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
}

h1 {
    margin: 8px 0 6px;
    font-family: "Orbitron", sans-serif;
    font-size: clamp(2rem, 5vw, 2.9rem);
    text-transform: uppercase;
    text-shadow: 0 0 16px rgba(0, 213, 255, 0.45);
}

.subtitle {
    margin: 0;
    color: var(--text-soft);
    font-size: 1rem;
}

.race-layout {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    align-items: start;
}

.canvas-shell {
    border-radius: 14px;
    border: 2px solid rgba(0, 213, 255, 0.42);
    padding: 8px;
    background: var(--surface);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

#plateau-jeu {
    display: block;
    width: 400px;
    max-width: 84vw;
    height: auto;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.14);
    background-image: url("../../../assets/images/img_voiture/route.png");
    background-size: cover;
}

.instructions {
    border-radius: 14px;
    border: 1px solid var(--line);
    background: var(--surface-soft);
    padding: 14px;
}

h2 {
    margin: 0 0 8px;
    font-family: "Orbitron", sans-serif;
    color: #ffd59f;
    font-size: 1.1rem;
}

ul {
    margin: 0;
    padding-left: 18px;
    color: var(--text-soft);
}

li {
    margin-bottom: 8px;
    line-height: 1.35;
}

footer {
    width: min(1100px, 96vw);
    margin-bottom: 18px;
    padding: 8px 12px;
    border-radius: 12px;
    border-top: 3px solid var(--accent);
    display: flex;
    justify-content: flex-end;
    background: rgba(10, 24, 48, 0.78);
}

#contact {
    margin: 0;
    padding: 6px 10px;
    border-radius: 8px;
    color: #d9e8ff;
    background: rgba(97, 199, 255, 0.2);
}

#contact a {
    color: #ffd8a6;
}

#contact a:hover {
    color: #ffe8cd;
}

@media (max-width: 900px) {
    .race-layout {
        grid-template-columns: 1fr;
    }

    .instructions {
        width: min(560px, 100%);
        margin: 0 auto;
    }
}

@media (max-width: 700px) {
    header {
        height: 165px;
        border-radius: 18px 18px 0 0;
    }

    .game-page {
        border-radius: 0 0 18px 18px;
        padding: 16px 8px 20px;
    }
}