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

body {
    font-family: 'Arial', sans-serif;
    background: #000;
    margin: 0;
    padding: 0;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

/* Boutons en haut à gauche */
.top-buttons {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    display: flex;
    gap: 10px;
    align-items: center;
}

/* Bouton menu */
.menu-btn {
    padding: 10px 18px;
    font-size: 0.95rem;
    background: linear-gradient(135deg, #141726, #222a4b);
    color: white;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.menu-btn:hover {
    background: linear-gradient(135deg, #1b2036, #2f3a68);
    transform: translateY(-1px);
    box-shadow: 0 8px 26px rgba(0, 0, 0, 0.75);
}

/* Bouton mute */
.mute-btn {
    width: 44px;
    height: 44px;
    padding: 0;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #141726, #222a4b);
    color: white;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mute-btn:hover {
    background: linear-gradient(135deg, #1b2036, #2f3a68);
    transform: translateY(-1px);
    box-shadow: 0 8px 26px rgba(0, 0, 0, 0.75);
}

.mute-btn.muted {
    opacity: 0.6;
    background: linear-gradient(135deg, #2a1f1f, #4a2a2a);
}

.mute-btn.muted:hover {
    background: linear-gradient(135deg, #3a2f2f, #5a3a3a);
}

/* Menu latéral */
.menu {
    position: fixed;
    top: 0;
    left: -400px;
    width: 400px;
    height: 100vh;
    background: radial-gradient(circle at top left, #202544 0, #070814 55%, #050612 100%);
    box-shadow: 2px 0 30px rgba(0, 0, 0, 0.8);
    z-index: 1002; /* Plus élevé que le bouton menu */
    transition: left 0.3s ease;
    overflow-y: auto;
}

.menu.open {
    left: 0;
}

.menu-header {
    background: linear-gradient(135deg, #15182b 0%, #262f55 60%, #3b4a86 100%);
    color: white;
    padding: 18px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.menu-header h2 {
    font-size: 1.2rem;
    margin: 0;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.close-btn {
    background: transparent;
    color: white;
    border: transparent;
    width: 32px;
    height: 32px;
    border-radius: 999px; /* cercle bien rond */
    font-size: 1.3em;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    border: transparent;
    transform: rotate(90deg);
}

.menu-content {
    padding: 18px 20px 24px;
    color: #e0e4ff;
}

.control-section {
    margin-bottom: 22px;
    padding: 16px 16px 14px;
    background: rgba(9, 11, 24, 0.95);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-section h3 {
    color: #f5f6ff;
    margin-bottom: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding-bottom: 6px;
}

.control-section p {
    color: #a7b0d8;
    font-size: 0.92rem;
    margin: 5px 0;
    line-height: 1.6;
}

.control-section strong {
    color: #ffce57;
    font-weight: bold;
}

.audio-section {
    margin-bottom: 22px;
    padding: 16px 16px 14px;
    background: rgba(9, 11, 24, 0.95);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.audio-section h3 {
    color: #f5f6ff;
    margin-bottom: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding-bottom: 6px;
}

.audio-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.volume-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #a7b0d8;
    font-size: 0.92rem;
}

.volume-label span:first-child {
    font-weight: 600;
    color: #f5f6ff;
}

#volumeValue {
    color: #ffce57;
    font-weight: bold;
    font-size: 0.95rem;
}

.volume-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffce57, #ffaa00);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    transition: all 0.2s;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 8px rgba(255, 206, 87, 0.5);
}

.volume-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffce57, #ffaa00);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    transition: all 0.2s;
}

.volume-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 8px rgba(255, 206, 87, 0.5);
}

.stats {
    padding: 16px 16px 10px;
    background: linear-gradient(150deg, #181c33 0%, #222a4b 40%, #3b4a86 100%);
    border-radius: 10px;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    font-weight: bold;
    opacity: 0.85;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

#speed, #boost, #goals {
    font-size: 1.1rem;
    font-weight: bold;
    color: #ffce57;
}

/* HUD en jeu façon Rocket League */
.hud {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 999;
    font-family: 'Arial', sans-serif;
}

/* Masquer le HUD quand on est sur la landing */
body.landing-active .hud {
    display: none;
}

/* Score en haut au centre */
.hud-top-center {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(10, 12, 28, 0.9), rgba(19, 26, 56, 0.95));
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
}

.hud-goals-label {
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    opacity: 0.7;
    text-transform: uppercase;
}

.hud-goals-value {
    font-size: 1.9rem;
    font-weight: bold;
    color: #ffce57;
}

.hud-timer {
    font-size: 1rem;
    font-weight: 600;
    margin-right: 6px;
}

/* Musique en haut à droite */
.hud-music {
    position: absolute;
    top: 18px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(10, 12, 28, 0.9), rgba(19, 26, 56, 0.95));
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
    max-width: 300px;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.hud-music.visible {
    opacity: 1;
    transform: translateX(0);
}

.hud-music-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.hud-music-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    overflow: hidden;
}

.hud-music-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: #ffce57;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hud-music-artist {
    font-size: 0.7rem;
    opacity: 0.7;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Bas de l'écran : vitesse au centre, boost à droite */
.hud-bottom {
    position: absolute;
    bottom: 28px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding: 0 40px;
}

/* Vitesse au centre bas */
.hud-speed-container {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 10px 20px 8px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(9, 11, 24, 0.9), rgba(27, 33, 70, 0.95));
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #ffffff;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
}

.hud-speed-value {
    font-size: 3rem;
    font-weight: bold;
    line-height: 1;
}

.hud-speed-unit {
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.7;
}

/* Boost en bas à droite sous forme de rond */
.hud-boost-container {
    position: absolute;
    right: 40px;
    bottom: 2px;
}

.hud-boost-circle {
    width: 115px;
    height: 115px;
    border-radius: 50%;
    border: 5px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 0 18px rgba(0, 0, 0, 0.9),
        0 0 28px rgba(255, 153, 0, 0.6);
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.35), rgba(0, 0, 0, 0.94)),
        conic-gradient(from -90deg, #ffb347, #ff7300, #ffcf4a, #ffb347);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.9);
}

.hud-boost-value {
    font-size: 2.1rem;
    font-weight: bold;
    line-height: 1;
}

.hud-boost-unit {
    font-size: 0.78rem;
    letter-spacing: 0.15em;
    margin-top: 4px;
    opacity: 0.9;
}

/* Message GOAL au centre de l'écran */
.goal-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    font-weight: bold;
    color: #ffdd55;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
    padding: 20px 40px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.goal-message.visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.05);
}

/* Container du jeu en plein écran */
#gameContainer {
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: #1a1a1a;
}

#gameContainer canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Landing page façon menu Rocket League */
.landing {
    position: fixed;
    inset: 0;
    z-index: 900;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 40px 60px;
    pointer-events: auto;
    /* Fond moins opaque pour mieux voir la scène derrière */
    background: radial-gradient(circle at top, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7));
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.landing.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.landing-inner {
    display: flex;
    flex-direction: column;
    gap: 18px;
    color: #ffffff;
}

.landing-title-main {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.9);
}

.landing-title-sub {
    font-size: 1.1rem;
    opacity: 0.85;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

/* Sélecteur de voiture */
.car-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 10px;
}

.car-nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.4);
    color: #ffffff;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    line-height: 1;
    padding: 0;
}

.car-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.1);
}

.car-nav-btn:active {
    transform: scale(0.95);
}

.car-preview-container {
    position: relative;
    width: 200px;
    height: 150px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

#carPreviewCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.car-name {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #ffffff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 12px;
    border-radius: 4px;
}

.landing-play-btn {
    margin-top: 6px;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    color: #0b0c16;
    background: linear-gradient(135deg, #ffce57, #ff9500);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.85);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.landing-play-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 38px rgba(0, 0, 0, 0.95);
    background: linear-gradient(135deg, #ffd978, #ffae33);
}

/* Bouton retour à l'accueil */
.back-to-landing-btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    color: #ffffff;
    background: linear-gradient(135deg, rgba(255, 206, 87, 0.2), rgba(255, 149, 0, 0.2));
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.back-to-landing-btn:hover {
    background: linear-gradient(135deg, rgba(255, 206, 87, 0.4), rgba(255, 149, 0, 0.4));
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.back-to-landing-btn:active {
    transform: translateY(0);
}

/* Overlay sombre quand le menu est ouvert */
body.menu-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    pointer-events: none;
}

@media (max-width: 768px) {
    .menu {
        width: 100%;
        left: -100%;
    }

    /* HUD plus compact mais même logique de placement */
    .hud-top-center {
        top: 12px;
    }

    .hud-goals-value {
        font-size: 1.8rem;
    }

    .hud-bottom {
        bottom: 20px;
        padding: 0 16px;
    }

    .hud-speed-value {
        font-size: 2.4rem;
    }

    .hud-boost-circle {
        width: 90px;
        height: 90px;
        border-width: 4px;
    }

    .hud-boost-value {
        font-size: 1.8rem;
    }
}