/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-hue: 200;
    --secondary-hue: 280;
    --accent-hue: 45;

    --bg-dark: hsl(220, 20%, 10%);
    --bg-darker: hsl(220, 25%, 5%);
    --primary: hsl(var(--primary-hue), 85%, 55%);
    --primary-light: hsl(var(--primary-hue), 85%, 65%);
    --primary-dark: hsl(var(--primary-hue), 85%, 45%);
    --secondary: hsl(var(--secondary-hue), 75%, 60%);
    --accent: hsl(var(--accent-hue), 90%, 55%);
    --success: hsl(140, 70%, 50%);
    --danger: hsl(0, 80%, 55%);
    --text-primary: hsl(0, 0%, 95%);
    --text-secondary: hsl(0, 0%, 70%);

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg,
            var(--bg-darker) 0%,
            var(--bg-dark) 50%,
            hsl(var(--primary-hue), 20%, 15%) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Game Container */
.game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Canvas */
#gameCanvas {
    border: 3px solid var(--glass-border);
    background: hsl(220, 15%, 12%);
    box-shadow:
        var(--glass-shadow),
        0 0 40px rgba(0, 150, 255, 0.3),
        inset 0 0 60px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
}

/* Menu Overlay */
.menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.3s ease;
}

.menu-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Menu Content */
.menu-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(20px);
    text-align: center;
    max-width: 500px;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Game Title */
.game-title {
    font-family: 'Press Start 2P', cursive;
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 30px rgba(0, 150, 255, 0.5);
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {

    0%,
    100% {
        filter: brightness(1);
    }

    50% {
        filter: brightness(1.2);
    }
}

.game-subtitle {
    font-family: 'Press Start 2P', cursive;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Buttons */
.game-button {
    font-family: 'Press Start 2P', cursive;
    font-size: 0.9rem;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow:
        0 4px 15px rgba(0, 150, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    margin: var(--spacing-sm) 0;
    min-width: 200px;
    text-transform: uppercase;
}

.game-button:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 25px rgba(0, 150, 255, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.game-button:active {
    transform: translateY(0);
}

.game-button.secondary {
    background: linear-gradient(135deg, var(--secondary), hsl(var(--secondary-hue), 75%, 50%));
    border-color: var(--secondary);
    box-shadow:
        0 4px 15px rgba(150, 0, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.game-button.secondary:hover {
    box-shadow:
        0 6px 25px rgba(150, 0, 255, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Controls Info */
.controls-info {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
}

.controls-info h3 {
    font-family: 'Press Start 2P', cursive;
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-light);
}

.control-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.control-item {
    background: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-sm);
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.control-item .key {
    font-family: 'Press Start 2P', cursive;
    font-size: 0.7rem;
    color: var(--accent);
}

.control-item .desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* HUD */
.hud {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-md);
    z-index: 50;
}

.hud.hidden {
    display: none;
}

.hud-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

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

.hud-value {
    font-family: 'Press Start 2P', cursive;
    font-size: 1rem;
    color: var(--primary-light);
}

/* Game Over / Victory */
.game-over-title,
.victory-title {
    font-family: 'Press Start 2P', cursive;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.game-over-title {
    color: var(--danger);
    text-shadow: 0 0 20px rgba(255, 0, 0, 0.5);
}

.victory-title {
    color: var(--success);
    text-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

.final-score,
.final-level,
.victory-message {
    font-size: 1.1rem;
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
}

.final-score span,
.final-level span {
    color: var(--accent);
    font-weight: bold;
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    padding: 0 20px;
    justify-content: space-between;
    align-items: flex-end;
    z-index: 90;
    pointer-events: none;
    /* Let clicks pass through container */
}

.d-pad,
.action-buttons {
    pointer-events: auto;
    /* Re-enable clicks for buttons */
}

.d-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.d-pad-row {
    display: flex;
    gap: 5px;
}

.d-pad-btn,
.action-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.d-pad-btn:active,
.action-btn:active {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0.95);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 15px;
}

.rotate-controls {
    display: flex;
    gap: 10px;
}

.fire-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 50, 50, 0.2);
    border-color: rgba(255, 50, 50, 0.4);
    font-size: 1.5rem;
}

.fire-btn:active {
    background: rgba(255, 50, 50, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
    .game-title {
        font-size: 1.8rem;
    }

    .control-grid {
        grid-template-columns: 1fr;
    }

    .hud {
        width: 100%;
        flex-direction: row;
        justify-content: space-around;
        top: 10px;
        padding: 0 10px;
        transform: none;
        left: 0;
    }

    .hud-item {
        padding: 5px 10px;
        flex: 1;
    }

    .hud-label {
        font-size: 0.6rem;
    }

    .hud-value {
        font-size: 0.8rem;
    }

    #gameCanvas {
        width: 100%;
        height: auto;
        aspect-ratio: 4/3;
        max-height: 60vh;
    }

    .mobile-controls {
        display: flex;
    }

    /* Hide desktop instructions on mobile */
    .controls-info {
        display: none;
    }
}