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

body {
    font-family: 'Racing Sans One', 'Arial', sans-serif;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    color: #fff;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 87, 51, 0.03) 2px,
            rgba(255, 87, 51, 0.03) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 87, 51, 0.03) 2px,
            rgba(255, 87, 51, 0.03) 4px
        );
    pointer-events: none;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(4px, 4px); }
}

.game-container {
    position: relative;
    width: 800px;
    height: 600px;
    background: linear-gradient(135deg, #1e1e2f 0%, #2a2a3e 100%);
    border-radius: 20px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.8),
        0 0 40px rgba(255, 87, 51, 0.4),
        inset 0 0 30px rgba(255, 87, 51, 0.1);
    overflow: hidden;
    border: 3px solid transparent;
    background-clip: padding-box;
    position: relative;
    animation: containerGlow 3s ease-in-out infinite alternate;
}

.game-container::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, #ff5733, #ff8a5b, #ff5733, #c0392b);
    border-radius: 20px;
    z-index: -1;
    animation: borderRotate 3s linear infinite;
}

@keyframes containerGlow {
    0% { box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(255, 87, 51, 0.4); }
    100% { box-shadow: 0 25px 70px rgba(0, 0, 0, 0.9), 0 0 60px rgba(255, 87, 51, 0.6); }
}

@keyframes borderRotate {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.game-header {
    display: flex;
    justify-content: space-between;
    padding: 12px 20px;
    background: linear-gradient(90deg, #0f0c29, #302b63, #24243e);
    color: white;
    font-size: 18px;
    border-bottom: 3px solid transparent;
    background-image: 
        linear-gradient(90deg, #0f0c29, #302b63, #24243e),
        linear-gradient(90deg, #ff5733, #ff8a5b, #ff5733);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.5),
        inset 0 -2px 5px rgba(255, 87, 51, 0.2);
    position: relative;
    z-index: 2;
}

#gameCanvas {
    display: block;
    background: linear-gradient(180deg, #1a1a2e 0%, #2c3e50 100%);
    width: 100%;
    height: calc(100% - 100px);
    box-shadow: 
        inset 0 0 50px rgba(0, 0, 0, 0.7),
        inset 0 0 100px rgba(0, 0, 0, 0.3);
    position: relative;
    filter: contrast(1.1) brightness(1.05);
}

.controls-info {
    padding: 8px 10px;
    background: linear-gradient(90deg, #24243e, #302b63, #0f0c29);
    color: #ddd;
    font-size: 14px;
    text-align: center;
    border-top: 1px solid rgba(255, 87, 51, 0.5);
}

.controls-info .key {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 4px;
    padding: 0 6px;
    margin: 0 2px;
    font-family: 'Orbitron', monospace;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.game-over, .start-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(25, 25, 50, 0.95) 0%, rgba(10, 10, 30, 0.98) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    z-index: 10;
    backdrop-filter: blur(5px);
}

.game-over {
    display: none;
}

.modal-content {
    background: linear-gradient(135deg, #302b63 0%, #24243e 100%);
    padding: 30px 50px;
    border-radius: 15px;
    border: 2px solid #ff5733;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 87, 51, 0.3);
    text-align: center;
    transform: scale(0.9);
    animation: modalAppear 0.5s forwards;
}

@keyframes modalAppear {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.game-title {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(255, 87, 51, 0.7), 0 0 20px rgba(255, 87, 51, 0.5);
    letter-spacing: 2px;
}

.highlight {
    color: #ff5733;
}

.car-icon {
    font-size: 60px;
    color: #ff5733;
    margin: 20px 0;
    text-shadow: 0 0 15px rgba(255, 87, 51, 0.8);
    animation: carMove 2s ease-in-out infinite;
}

@keyframes carMove {
    0% { transform: translateX(-50px) rotate(0deg); }
    50% { transform: translateX(50px) rotate(0deg); }
    100% { transform: translateX(-50px) rotate(0deg); }
}

button {
    margin-top: 20px;
    padding: 12px 25px;
    font-size: 18px;
    background: linear-gradient(135deg, #ff5733 0%, #e74c3c 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
    font-family: 'Orbitron', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

button:hover {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.6);
}

button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(231, 76, 60, 0.4);
}

.btn-primary {
    position: relative;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.btn-primary:hover::before {
    transform: translateX(0);
}

.pulse-effect {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 87, 51, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(255, 87, 51, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 87, 51, 0);
    }
}

.score, .speed, .lives {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(50, 50, 80, 0.5) 100%);
    padding: 8px 15px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.score::before, .speed::before, .lives::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.score:hover::before, .speed:hover::before, .lives:hover::before {
    left: 100%;
}

.score:hover, .speed:hover, .lives:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 6px 20px rgba(255, 87, 51, 0.4),
        inset 0 1px 2px rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 87, 51, 0.3);
}

.score i, .speed i, .lives i {
    color: #ff5733;
    font-size: 18px;
    text-shadow: 
        0 0 10px rgba(255, 87, 51, 0.8),
        0 0 20px rgba(255, 87, 51, 0.4);
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.font-digital {
    color: #fff;
    text-shadow: 
        0 0 5px rgba(255, 255, 255, 0.9),
        0 0 10px rgba(255, 87, 51, 0.3);
    font-weight: bold;
    letter-spacing: 2px;
    font-size: 20px;
    animation: digitalGlow 2s ease-in-out infinite alternate;
}

@keyframes digitalGlow {
    0% { text-shadow: 0 0 5px rgba(255, 255, 255, 0.9), 0 0 10px rgba(255, 87, 51, 0.3); }
    100% { text-shadow: 0 0 10px rgba(255, 255, 255, 1), 0 0 20px rgba(255, 87, 51, 0.5); }
}


.lives span {
    transition: all 0.3s ease;
}

.lives span[data-lives="1"] {
    color: #e74c3c;
    animation: criticalPulse 0.5s ease-in-out infinite;
}

@keyframes criticalPulse {
    0%, 100% { transform: scale(1); color: #e74c3c; }
    50% { transform: scale(1.2); color: #ff6b6b; }
}


.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #ff5733;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}


.game-container.game-active {
    animation: gameStart 0.5s ease-out;
}

@keyframes gameStart {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); opacity: 1; }
}


.controls-info {
    position: relative;
    overflow: hidden;
}

.controls-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 87, 51, 0.2), transparent);
    animation: slideInfo 8s linear infinite;
}

@keyframes slideInfo {
    0% { left: -100%; }
    100% { left: 100%; }
}


.controls-info .key:hover {
    transform: translateY(-2px);
    background: rgba(255, 87, 51, 0.3);
    border-color: #ff5733;
    box-shadow: 0 4px 8px rgba(255, 87, 51, 0.4);
}


.modal-content h2 {
    animation: titleBounce 0.6s ease-out;
}

@keyframes titleBounce {
    0% { transform: translateY(-20px); opacity: 0; }
    50% { transform: translateY(5px); }
    100% { transform: translateY(0); opacity: 1; }
}

.modal-content p {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    0% { transform: translateY(20px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}


@media (max-width: 850px) {
    .game-container {
        width: min(800px, calc(100vw - 16px));
        height: auto;
        aspect-ratio: 4/3;
    }
}

@media (max-width: 640px) {
    body {
        height: auto;
        min-height: 100vh;
        overflow-x: hidden;
        align-items: flex-start;
        padding-top: 8px;
    }
    .game-container {
        width: calc(100vw - 16px);
        height: auto;
        aspect-ratio: 4/3;
        border-radius: 12px;
    }
    .game-header {
        padding: 8px 12px;
        font-size: 13px;
        flex-wrap: wrap;
        gap: 4px;
    }
    .game-title {
        font-size: clamp(1.2rem, 6vw, 2.5rem);
    }
    .modal-content {
        padding: 20px 16px;
    }
    .car-icon {
        font-size: 40px;
    }
    .controls-info {
        font-size: 11px;
        padding: 6px 8px;
    }
    .font-digital {
        font-size: 14px;
    }
    button {
        padding: 10px 18px;
        font-size: 14px;
        min-height: 54px;
        line-height: 1.25;
        white-space: normal;
        overflow: visible;
    }
}


.game-container * {
    will-change: auto;
}

#gameCanvas {
    will-change: transform;
    image-rendering: optimizeSpeed;
    image-rendering: -webkit-optimize-contrast;
}