:root {
    --primary: #FF006E;
    --secondary: #FB5607;
    --accent: #FFBE0B;
    --purple: #8338EC;
    --blue: #3A86FF;
    --dark: #1a1a1a;
    --light: #ffffff;
    --gray: #666666;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
}

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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, var(--dark) 0%, var(--purple) 50%, var(--blue) 100%);
    color: var(--light);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 0, 110, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(251, 86, 7, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(131, 56, 236, 0.2) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.header {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.header h1 {
    font-size: 1.5rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(255, 0, 110, 0.5);
}

.language-toggle .lang-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--light);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 0, 110, 0.3);
}

.main-content {
    padding: 2rem 1rem 6rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.section.active {
    display: block;
}

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

.game-container {
    text-align: center;
}

.game-info {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1rem;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.speed-display, .score-display, .time-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: bold;
}

.speed-display {
    color: var(--accent);
}

.score-display {
    color: var(--primary);
}

.time-display {
    color: var(--blue);
}

#gameCanvas {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 15px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    background: linear-gradient(180deg, #87CEEB 0%, #98FB98 100%);
    margin-bottom: 1rem;
}

.game-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.control-btn {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border: none;
    color: var(--light);
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.control-btn::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;
}

.control-btn:hover::before {
    left: 100%;
}

.control-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.control-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.pause-btn {
    background: linear-gradient(45deg, var(--warning), var(--secondary));
}

.reset-btn {
    background: linear-gradient(45deg, var(--danger), var(--primary));
}

.controls-info {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.controls-info h3 {
    margin-bottom: 1rem;
    color: var(--accent);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-item kbd {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-weight: bold;
    min-width: 40px;
    text-align: center;
}

.leaderboard-container, .settings-container, .faq-container {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.leaderboard-container h2, .settings-container h2, .faq-container h2 {
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.leaderboard-filters {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active, .filter-btn:hover {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border-color: transparent;
    transform: translateY(-2px);
}

.leaderboard-list {
    min-height: 300px;
}

.leaderboard-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    margin-bottom: 0.5rem;
    padding: 1rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.leaderboard-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.leaderboard-item.top-3 {
    border-left-color: var(--accent);
    background: rgba(255, 190, 11, 0.1);
}

.player-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.player-rank {
    background: var(--primary);
    color: var(--light);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
}

.player-rank.gold {
    background: var(--accent);
    color: var(--dark);
}

.player-rank.silver {
    background: #c0c0c0;
    color: var(--dark);
}

.player-rank.bronze {
    background: #cd7f32;
    color: var(--light);
}

.score-info {
    text-align: right;
}

.score-value {
    font-weight: bold;
    color: var(--accent);
    font-size: 1.1rem;
}

.score-date {
    font-size: 0.8rem;
    color: var(--gray);
}

.clear-btn, .reset-stats-btn {
    background: linear-gradient(45deg, var(--danger), #ff4757);
    border: none;
    color: var(--light);
    padding: 0.75rem 1.5rem;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem auto 0;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.clear-btn:hover, .reset-stats-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
}

.setting-group {
    margin-bottom: 2rem;
}

.setting-group h3 {
    color: var(--accent);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.setting-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.setting-item label {
    font-weight: 500;
}

.setting-item select, .setting-item input[type="text"] {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--light);
    padding: 0.5rem;
    border-radius: 8px;
    min-width: 120px;
}

.setting-item select:focus, .setting-item input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(255, 0, 110, 0.3);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.2);
    transition: .4s;
    border-radius: 30px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
}

input:checked + .slider:before {
    transform: translateX(30px);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
}

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--light);
    padding: 1rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.1);
}

.faq-question[aria-expanded="true"] {
    background: rgba(255, 0, 110, 0.2);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
    color: var(--primary);
}

.faq-answer {
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: slideDown 0.3s ease-out;
}

.faq-answer[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding: 0 1rem;
    }
    to {
        opacity: 1;
        max-height: 200px;
        padding: 1rem;
    }
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray);
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 10px;
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

.nav-item:hover, .nav-item.active {
    color: var(--primary);
    background: rgba(255, 0, 110, 0.1);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--accent);
    background: rgba(255, 190, 11, 0.2);
}

footer {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.5);
    color: var(--gray);
    font-size: 0.8rem;
    margin-top: 2rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.2rem;
    }
    
    .main-content {
        padding: 1rem 0.5rem 6rem;
    }
    
    .game-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .game-controls {
        gap: 0.5rem;
    }
    
    .control-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .controls-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .leaderboard-container, .settings-container, .faq-container {
        padding: 1rem;
        margin: 0 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .setting-item select, .setting-item input[type="text"] {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .game-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .control-btn {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

.game-over-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-content {
    background: linear-gradient(135deg, var(--dark), var(--purple));
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 400px;
    width: 90%;
}

.modal-content h2 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.final-score {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary);
    margin: 1rem 0;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.modal-btn {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border: none;
    color: var(--light);
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.modal-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.touch-controls {
    position: fixed;
    bottom: 80px;
    left: 0;
    right: 0;
    display: none;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 100;
}

.touch-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--light);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    backdrop-filter: blur(10px);
}

.touch-btn:active {
    background: rgba(255, 0, 110, 0.5);
    transform: scale(0.95);
}

.touch-controls.active {
    display: flex;
}

@media (max-width: 768px) {
    .touch-controls.active {
        display: flex;
    }
}

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark), var(--purple));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    transition: opacity 0.5s ease;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 2rem;
}

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

.loading-text {
    color: var(--light);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.loading-progress {
    color: var(--gray);
    font-size: 0.9rem;
}