/* Color Match Styles */
:root {
    --bg-dark: #050505;
    --bg-card: rgba(20, 20, 25, 0.7);
    --primary-neon: #6366f1;
    --secondary-neon: #ec4899;
    --accent-cyan: #06b6d4;
    --text-main: #fff;
    --text-dim: #94a3b8;
    --border-glass: rgba(255, 255, 255, 0.1);
    --radius-xl: 24px;
    --success: #22c55e;
    --danger: #ef4444;
    --golden: #fbbf24;
}

body {
    background: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Screens */
.game-container {
    position: relative;
    max-width: 560px;
    margin: 0 auto;
    padding: 20px 16px;
    min-height: 70vh;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Start Screen */
.start-content {
    text-align: center;
    padding-top: 20px;
}

.game-title {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.game-subtitle {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.color-preview {
    margin: 24px auto 32px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(12px);
}

.preview-word {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.rules-box {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 16px 20px;
    margin-bottom: 32px;
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.6;
    text-align: left;
}

.btn-primary {
    display: inline-block;
    padding: 16px 48px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: scale(0.96);
}

.btn-secondary {
    display: inline-block;
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-secondary:active {
    transform: scale(0.96);
}

.high-score-display {
    margin-top: 20px;
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* HUD */
.hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    margin-bottom: 8px;
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.hud-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hud-value {
    font-size: 1.4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.timer-item .hud-value {
    color: var(--accent-cyan);
}

/* Timer Bar */
.timer-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    margin-bottom: 16px;
    overflow: hidden;
}

.timer-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--primary-neon));
    border-radius: 2px;
    transition: width 1s linear;
}

.timer-bar.danger {
    background: linear-gradient(90deg, var(--danger), var(--secondary-neon));
}

/* Game Area */
.game-area {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding-top: 16px;
}

.combo-indicator {
    height: 28px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--golden);
    text-align: center;
    transition: opacity 0.2s;
}

.color-display {
    width: 100%;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s;
}

.color-word {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 6px;
    text-transform: uppercase;
    user-select: none;
    transition: transform 0.15s ease;
}

/* Feedback flash */
.feedback-flash {
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: var(--radius-xl);
    opacity: 0;
    transition: opacity 0.15s;
}

.feedback-flash.correct {
    background: radial-gradient(circle, rgba(34, 197, 94, 0.25), transparent 70%);
    opacity: 1;
    animation: flashFade 0.5s ease forwards;
}

.feedback-flash.wrong {
    background: radial-gradient(circle, rgba(239, 68, 68, 0.25), transparent 70%);
    opacity: 1;
    animation: flashFade 0.5s ease forwards;
}

@keyframes flashFade {
    0% { opacity: 1; }
    100% { opacity: 0; }
}

/* Answer Buttons */
.button-row {
    display: flex;
    gap: 16px;
    width: 100%;
}

.answer-btn {
    flex: 1;
    padding: 20px 16px;
    font-size: 1.3rem;
    font-weight: 700;
    border: 2px solid;
    border-radius: 16px;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

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

.match-btn {
    color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.4);
}

.match-btn:active {
    background: rgba(34, 197, 94, 0.25);
    box-shadow: 0 0 24px rgba(34, 197, 94, 0.3);
}

.nomatch-btn {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.4);
}

.nomatch-btn:active {
    background: rgba(239, 68, 68, 0.25);
    box-shadow: 0 0 24px rgba(239, 68, 68, 0.3);
}

/* Countdown Overlay */
.countdown-overlay {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(5, 5, 5, 0.85);
    border-radius: var(--radius-xl);
    z-index: 10;
}

.countdown-overlay.active {
    display: flex;
}

.countdown-text {
    font-size: 5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-neon), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: countPulse 0.6s ease infinite;
}

@keyframes countPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* Game Over Screen */
.gameover-content {
    text-align: center;
    padding-top: 24px;
}

.gameover-title {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.new-record {
    display: inline-block;
    padding: 6px 20px;
    background: linear-gradient(135deg, var(--golden), #f59e0b);
    color: #000;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 50px;
    margin-bottom: 20px;
    animation: recordPulse 1s ease infinite;
}

.new-record.hidden {
    display: none;
}

@keyframes recordPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(251, 191, 36, 0.4); }
    50% { box-shadow: 0 0 24px rgba(251, 191, 36, 0.7); }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 20px 0 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.gameover-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Score Pop Animation */
.score-pop {
    position: absolute;
    font-size: 1.4rem;
    font-weight: 800;
    pointer-events: none;
    animation: scorePop 0.8s ease forwards;
    z-index: 5;
}

.score-pop.plus {
    color: var(--success);
}

.score-pop.minus {
    color: var(--danger);
}

@keyframes scorePop {
    0% { opacity: 1; transform: translateY(0) scale(1); }
    100% { opacity: 0; transform: translateY(-60px) scale(1.3); }
}

/* Responsive */
@media (max-width: 400px) {
    .color-word {
        font-size: 2.8rem;
        letter-spacing: 3px;
    }

    .answer-btn {
        padding: 16px 12px;
        font-size: 1.1rem;
    }

    .color-display {
        min-height: 160px;
    }
}

@media (min-width: 600px) {
    .color-word {
        font-size: 5rem;
    }

    .color-display {
        min-height: 240px;
    }
}