@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #070913;
    --bg-surface: rgba(14, 18, 36, 0.75);
    --bg-surface-hover: rgba(22, 28, 54, 0.85);
    --border-glow: rgba(0, 255, 136, 0.25);
    --border-color: rgba(255, 255, 255, 0.08);

    --primary-neon: #00ff88;
    --secondary-neon: #00e5ff;
    --accent-pink: #ff0055;
    --accent-gold: #ffd700;
    
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --font-heading: 'Orbitron', monospace, sans-serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(0, 229, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(0, 255, 136, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(255, 0, 85, 0.04) 0%, transparent 60%);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    overflow-x: hidden;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    max-width: 620px;
    position: relative;
    z-index: 10;
}

/* Header */
.game-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4px;
}

.game-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary-neon) 0%, var(--secondary-neon) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}

.game-title span.pulse-dot {
    width: 10px;
    height: 10px;
    background: var(--primary-neon);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-neon);
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.icon-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 10px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    backdrop-filter: blur(8px);
}

.icon-btn:hover {
    color: var(--primary-neon);
    border-color: var(--primary-neon);
    box-shadow: 0 0 12px rgba(0, 255, 136, 0.2);
    transform: translateY(-1px);
}

.icon-btn:active {
    transform: translateY(1px);
}

/* Scoreboard HUD */
.scoreboard {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.score-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 8px;
    text-align: center;
    backdrop-filter: blur(12px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.score-card.active {
    border-color: var(--border-glow);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.15);
}

.score-card .label {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.score-card .value {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.score-card.accent-score .value {
    color: var(--primary-neon);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
}

.score-card.accent-best .value {
    color: var(--accent-gold);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
}

.score-card.accent-combo .value {
    color: var(--secondary-neon);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

/* Canvas Area */
.canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    background: #090c1a;
    border: 1px solid rgba(0, 255, 136, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 255, 136, 0.15);
}

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

/* Modals & Overlays */
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(8, 11, 24, 0.88);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    z-index: 20;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.overlay-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 3px;
    margin-bottom: 8px;
}

.overlay-title.gameover {
    color: var(--accent-pink);
    text-shadow: 0 0 20px rgba(255, 0, 85, 0.5);
}

.overlay-title.welcome {
    background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.overlay-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    max-width: 380px;
    line-height: 1.4;
}

.gameover-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 12px 18px;
    border-radius: 12px;
}

.stat-box .stat-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.stat-box .stat-num {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-neon);
}

.new-record-tag {
    display: inline-block;
    background: rgba(255, 215, 0, 0.15);
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 1px;
    animation: bounce 0.8s infinite alternate;
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(-4px); }
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, #00ff88 0%, #00d277 100%);
    color: #070913;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    border: none;
    border-radius: 12px;
    padding: 14px 32px;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
}

.btn-primary:active {
    transform: translateY(1px) scale(0.98);
}

/* Controls & Settings Bar */
.controls-panel {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 10px 14px;
    backdrop-filter: blur(12px);
}

.setting-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.setting-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.segmented-control {
    display: flex;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}

.segmented-control button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.segmented-control button.active {
    background: rgba(0, 255, 136, 0.15);
    color: var(--primary-neon);
    font-weight: 600;
}

/* Virtual D-pad for mobile/touch */
.virtual-dpad {
    display: none;
    grid-template-columns: repeat(3, 56px);
    grid-template-rows: repeat(3, 56px);
    gap: 6px;
    margin-top: 6px;
}

.dpad-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: background 0.1s, transform 0.1s, border-color 0.1s;
    touch-action: manipulation;
}

.dpad-btn:active {
    background: rgba(0, 255, 136, 0.2);
    border-color: var(--primary-neon);
    transform: scale(0.92);
}

.dpad-up    { grid-column: 2; grid-row: 1; }
.dpad-left  { grid-column: 1; grid-row: 2; }
.dpad-right { grid-column: 3; grid-row: 2; }
.dpad-down  { grid-column: 2; grid-row: 3; }

/* Keyboard Hints */
.keyboard-hints {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.76rem;
    width: 100%;
}

.keycap {
    display: inline-block;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-bottom: 2px solid rgba(255, 255, 255, 0.25);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.68rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin: 0 2px;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .virtual-dpad {
        display: grid;
    }
    .game-title {
        font-size: 1.4rem;
    }
    .score-card .value {
        font-size: 1.05rem;
    }
    .scoreboard {
        gap: 6px;
    }
    .controls-panel {
        justify-content: center;
    }
    .keyboard-hints {
        display: none;
    }
}