/* Tetris Game Styles */

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

body {
    background: var(--bg-dark, #050505);
    color: var(--text-main, #ffffff);
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Header */
.g4f-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    position: relative;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main, #fff);
    font-weight: 600;
    font-size: 1.1rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-neon, #6366f1), var(--secondary-neon, #ec4899));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.highlight-4 {
    color: var(--secondary-neon, #ec4899);
    font-weight: 700;
}

.lang-switch {
    display: flex;
    gap: 4px;
}

.lang-btn {
    background: var(--bg-card, rgba(20,20,25,0.7));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    color: var(--text-dim, #94a3b8);
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.lang-btn:hover {
    border-color: var(--primary-neon, #6366f1);
    color: var(--text-main, #fff);
}

.lang-btn.active {
    background: var(--primary-neon, #6366f1);
    border-color: var(--primary-neon, #6366f1);
    color: #fff;
}

/* Screens */
.game-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

.screen {
    display: none;
    width: 100%;
    max-width: 700px;
}

.screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Start / Game Over */
.start-content {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card, rgba(20,20,25,0.7));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 20px;
    backdrop-filter: blur(16px);
    width: 100%;
    max-width: 420px;
}

.game-title {
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-neon, #6366f1), var(--secondary-neon, #ec4899));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.game-subtitle {
    color: var(--text-dim, #94a3b8);
    font-size: 1rem;
    margin-bottom: 28px;
}

.neon-btn {
    padding: 14px 40px;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: #fff;
}

.neon-btn.primary {
    background: linear-gradient(135deg, var(--primary-neon, #6366f1), var(--secondary-neon, #ec4899));
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.neon-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
}

.start-hint {
    color: var(--text-dim, #94a3b8);
    font-size: 0.85rem;
    margin-top: 16px;
}

.controls-info {
    margin-top: 24px;
    text-align: left;
    padding: 16px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.06);
}

.controls-info h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--accent-cyan, #06b6d4);
}

.controls-info ul {
    list-style: none;
}

.controls-info li {
    color: var(--text-dim, #94a3b8);
    font-size: 0.85rem;
    padding: 3px 0;
}

.controls-info li::before {
    content: '>';
    color: var(--primary-neon, #6366f1);
    margin-right: 8px;
    font-weight: 700;
}

/* Game Layout */
.game-layout {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
}

.game-board-area {
    position: relative;
    background: rgba(10, 10, 15, 0.9);
    border: 2px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.15), inset 0 0 40px rgba(0,0,0,0.3);
}

#game-canvas {
    display: block;
}

/* Sidebar */
.game-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 120px;
}

.info-panel {
    background: var(--bg-card, rgba(20,20,25,0.7));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 12px;
    padding: 16px;
    backdrop-filter: blur(10px);
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 14px;
}

.hud-item:last-child {
    margin-bottom: 0;
}

.hud-label {
    font-size: 0.75rem;
    color: var(--text-dim, #94a3b8);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.hud-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-cyan, #06b6d4);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.next-panel {
    background: var(--bg-card, rgba(20,20,25,0.7));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    backdrop-filter: blur(10px);
}

#next-canvas {
    display: block;
    margin: 10px auto 0;
}

/* Pause Overlay */
.overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.overlay.active {
    display: flex;
}

.overlay-content {
    text-align: center;
    padding: 40px;
    background: var(--bg-card, rgba(20,20,25,0.85));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 20px;
}

.overlay-content h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--primary-neon, #6366f1), var(--secondary-neon, #ec4899));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.overlay-content p {
    color: var(--text-dim, #94a3b8);
}

/* Final Stats */
.final-stats {
    margin: 24px 0;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    font-size: 1rem;
}

.stat-value {
    font-weight: 700;
    color: var(--accent-cyan, #06b6d4);
}

.new-record {
    margin-top: 16px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--secondary-neon, #ec4899);
    text-shadow: 0 0 20px rgba(236, 72, 153, 0.6);
    animation: pulse-record 1s ease-in-out infinite alternate;
}

@keyframes pulse-record {
    from { transform: scale(1); opacity: 0.8; }
    to { transform: scale(1.08); opacity: 1; }
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px;
}

.mobile-row {
    display: flex;
    gap: 10px;
}

.mobile-btn {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    border: 1px solid var(--border-glass, rgba(255,255,255,0.15));
    background: var(--bg-card, rgba(20,20,25,0.7));
    color: var(--text-main, #fff);
    font-size: 1.4rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    transition: all 0.15s;
    backdrop-filter: blur(6px);
}

.mobile-btn:active {
    background: var(--primary-neon, #6366f1);
    border-color: var(--primary-neon, #6366f1);
    transform: scale(0.92);
}

.mobile-btn.wide {
    width: 120px;
    font-size: 0.9rem;
    letter-spacing: 2px;
}

/* Ad + Footer */
.g4f-ad-container {
    max-width: 728px;
    margin: 20px auto;
    padding: 20px;
    text-align: center;
    background: var(--bg-card, rgba(20,20,25,0.7));
    border: 1px solid var(--border-glass, rgba(255,255,255,0.1));
    border-radius: 12px;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-placeholder-content {
    color: var(--text-dim, #94a3b8);
    font-size: 0.85rem;
}

.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-dim, #94a3b8);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-glass, rgba(255,255,255,0.06));
}

/* Responsive */
@media (max-width: 600px) {
    .g4f-header {
        padding: 12px 16px;
    }

    .game-container {
        padding: 10px;
    }

    .game-layout {
        flex-direction: column;
        align-items: center;
    }

    .game-sidebar {
        flex-direction: row;
        min-width: unset;
        width: 100%;
        justify-content: center;
    }

    .info-panel {
        flex-direction: row;
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
    }

    .hud-item {
        margin-bottom: 0;
    }

    .next-panel {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .mobile-controls {
        display: flex;
    }

    .start-content {
        padding: 28px 18px;
    }

    .game-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 380px) {
    .mobile-btn {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .mobile-btn.wide {
        width: 100px;
    }
}