:root {
    --primary-color: #ffd700;
    --secondary-color: #1a237e;
    --accent-color: #ff4081;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--dark-bg);
    background-image: radial-gradient(circle at 25% 25%, rgba(255, 215, 0, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 75% 75%, rgba(255, 64, 129, 0.1) 0%, transparent 20%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    padding: 0;
    margin: 0;
}

.container {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.game-header {
    text-align: center;
    margin: 20px 0 40px;
}

.game-title {
    font-weight: 900;
    font-size: 2.8rem;
    color: var(--primary-color);
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    margin: 0 0 15px;
    letter-spacing: -0.5px;
}

.game-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 550px;
    transition: var(--transition);
    width: 100%;
}

.hidden {
    display: none !important;
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 30px;
    width: 100%;
    max-width: 800px;
    border: 1px solid rgba(255, 215, 0, 0.1);
}

.start-screen .card {
    text-align: center;
}

.btn {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    padding: 14px 36px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
    margin: 10px;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.6);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-primary);
    box-shadow: 0 5px 15px rgba(26, 35, 126, 0.4);
}

.btn-secondary:hover {
    box-shadow: 0 8px 25px rgba(26, 35, 126, 0.6);
}

.spacebar-visual {
    width: 100%;
    max-width: 600px;
    height: 140px;
    background-color: var(--secondary-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    font-weight: 700;
    margin: 30px auto;
    border: 3px solid var(--primary-color);
    transition: var(--transition);
    box-shadow: 0 0 25px rgba(255, 215, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.spacebar-visual::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: 0.5s;
}

.spacebar-visual.pressed {
    transform: scale(0.97);
    background-color: #283593;
    box-shadow: 0 0 35px rgba(255, 215, 0, 0.5);
}

.spacebar-visual.pressed::after {
    left: 100%;
}

.stats-container {
    display: flex;
    justify-content: space-around;
    width: 100%;
    flex-wrap: wrap;
    margin: 25px 0;
    gap: 15px;
}

.stat-box {
    background-color: rgba(30, 41, 59, 0.8);
    border-radius: 12px;
    padding: 20px 15px;
    flex: 1;
    min-width: 140px;
    text-align: center;
    border: 1px solid rgba(255, 215, 0, 0.15);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 8px;
}

.stat-title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: var(--transition);
}

.stat-value.increase {
    animation: pulse-value 0.5s;
}

@keyframes pulse-value {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.chart-container {
    width: 100%;
    height: 300px;
    background-color: rgba(30, 41, 59, 0.6);
    border-radius: 12px;
    padding: 20px;
    margin: 25px 0;
    border: 1px solid rgba(255, 215, 0, 0.1);
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.2);
}

.timer {
    font-size: 4rem;
    font-weight: 900;
    color: var(--primary-color);
    margin: 15px 0;
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    font-variant-numeric: tabular-nums;
}

.result-screen h2 {
    color: var(--primary-color);
    margin: 0 0 30px;
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
}

.rank-badge {
    font-size: 2.5rem;
    font-weight: 900;
    padding: 15px 40px;
    border-radius: 50px;
    margin: 25px 0;
    text-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    display: inline-block;
}

.rank-slow {
    background-color: #718096;
    box-shadow: 0 5px 15px rgba(113, 128, 150, 0.4);
}

.rank-average {
    background-color: #48bb78;
    box-shadow: 0 5px 15px rgba(72, 187, 120, 0.4);
}

.rank-fast {
    background-color: #3182ce;
    box-shadow: 0 5px 15px rgba(49, 130, 206, 0.4);
}

.rank-veryfast {
    background-color: #805ad5;
    box-shadow: 0 5px 15px rgba(128, 90, 213, 0.4);
}

.rank-godlike {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.7);
    animation: godlike-pulse 2s infinite;
}

@keyframes godlike-pulse {
    0% {
        box-shadow: 0 0 30px rgba(255, 215, 0, 0.7);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 215, 0, 0.9);
    }
    100% {
        box-shadow: 0 0 30px rgba(255, 215, 0, 0.7);
    }
}

.instructions {
    background-color: rgba(30, 41, 59, 0.6);
    border-radius: 12px;
    padding: 25px;
    margin: 25px;
    border: 1px solid rgba(255, 215, 0, 0.1);
    text-align: left;
}

.instructions h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 700;
}

.instructions ul {
    padding-left: 20px;
    margin-bottom: 0;
}

.instructions li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.volume-control {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: rgba(30, 41, 59, 0.8);
    padding: 10px 15px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    border: 1px solid rgba(255, 215, 0, 0.15);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.volume-icon {
    cursor: pointer;
    margin-right: 10px;
    color: var(--primary-color);
}

input[type="range"] {
    width: 100px;
    background: transparent;
}

.time-selection {
    margin: 25px 0;
    text-align: center;
}

.time-selection h3 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
}

.time-option {
    background-color: var(--card-bg);
    border: 2px solid var(--primary-color);
    color: var(--text-primary);
    padding: 12px 24px;
    margin: 0 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.time-option:hover {
    background-color: rgba(255, 215, 0, 0.1);
    transform: translateY(-3px);
}

.time-option.selected {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

.countdown-container {
    text-align: center;
    width: 100%;
}

.countdown-number {
    font-size: 6rem;
    font-weight: 900;
    color: var(--primary-color);
    text-shadow: 0 0 25px rgba(255, 215, 0, 0.7);
    margin: 20px 0;
}

.countdown-text {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.button-group {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(255, 215, 0, 0.6);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes flash {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.flash {
    animation: flash 0.5s;
}

@keyframes countdown {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.countdown-animation {
    animation: countdown 1s ease-in-out;
}

@keyframes slideIn {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-in {
    animation: slideIn 0.5s ease-out forwards;
}

.result-item {
    opacity: 0;
    animation: slideIn 0.5s ease-out forwards;
    animation-delay: calc(var(--animation-order) * 0.15s);
}

.new-record {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
    animation: bounce 1s;
}

@keyframes bounce {
    0%, 100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, -10px);
    }
}

@media (max-width: 768px) {
    .game-title {
        font-size: 2rem;
    }

    .spacebar-visual {
        height: 120px;
        font-size: 1.8rem;
    }

    .timer {
        font-size: 3.5rem;
    }

    .stats-container {
        flex-direction: column;
        align-items: center;
    }

    .stat-box {
        width: 90%;
        position: relative;
    }

    .time-option {
        display: block;
        margin: 8px auto;
        width: 80%;
    }

    .countdown-number {
        font-size: 5rem;
    }

    .btn {
        padding: 12px 28px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .game-title {
        font-size: 1.8rem;
    }

    .card {
        padding: 20px 15px;
    }

    .timer {
        font-size: 3rem;
    }

    .rank-badge {
        font-size: 2rem;
        padding: 12px 30px;
    }
}