:root {
    --bg-base: #0a0a0f;
    --bg-grid: #12121a;
    --neon-primary: #2db810;
    --neon-secondary: #00a8b0;
    --neon-accent: #cc00cc;
    --neon-violet: #9900cc;
    --text-primary: #c0c0c0;
    --text-secondary: #606060;
    --glow-primary: 0 0 5px #2db810, 0 0 8px #2db810;
    --glow-secondary: 0 0 5px #00a8b0, 0 0 8px #00a8b0;
    --glow-accent: 0 0 5px #cc00cc, 0 0 8px #cc00cc;
}

[data-theme="light"] {
    --bg-base: #e8e8ec;
    --bg-grid: #d8d8dc;
    --neon-primary: #1a7a00;
    --neon-secondary: #007a88;
    --neon-accent: #990088;
    --neon-violet: #770088;
    --text-primary: #202020;
    --text-secondary: #505050;
    --glow-primary: 0 0 3px #1a7a00, 0 0 5px #1a7a00;
    --glow-secondary: 0 0 3px #007a88, 0 0 5px #007a88;
    --glow-accent: 0 0 3px #990088, 0 0 5px #990088;
}

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

body {
    font-family: 'Orbitron', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    padding: 16px;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.02) 0px,
        rgba(0, 0, 0, 0.02) 1px,
        transparent 1px,
        transparent 2px
    );
    z-index: 1000;
}

.vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.2) 100%);
    z-index: 999;
}

.container {
    width: 100%;
    max-width: 520px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: linear-gradient(180deg, rgba(20, 20, 30, 0.6) 0%, rgba(10, 10, 15, 0.8) 100%);
    border: 1px solid rgba(57, 255, 20, 0.1);
    border-radius: 16px;
}

[data-theme="light"] .container {
    background: linear-gradient(180deg, rgba(240, 240, 245, 0.8) 0%, rgba(230, 230, 235, 0.9) 100%);
    border-color: rgba(26, 128, 0, 0.15);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .header {
    border-bottom-color: rgba(0, 0, 0, 0.08);
}

.logo-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.logo {
    font-size: 26px;
    font-weight: 900;
    color: var(--neon-primary);
    text-shadow: var(--glow-primary);
    position: relative;
    letter-spacing: 4px;
    animation: glitch 4s infinite;
}

@keyframes glitch {
    0%, 92%, 100% {
        text-shadow: var(--glow-primary);
        transform: translate(0);
    }
    93% {
        text-shadow: -2px 0 var(--neon-accent), 2px 0 var(--neon-secondary);
        transform: translate(-1px, 0.5px);
    }
    95% {
        text-shadow: 2px 0 var(--neon-accent), -2px 0 var(--neon-secondary);
        transform: translate(1px, -0.5px);
    }
    97% {
        text-shadow: var(--glow-primary);
        transform: translate(0);
    }
}

.mode-indicator {
    font-size: 11px;
    color: var(--neon-secondary);
    letter-spacing: 3px;
    text-shadow: var(--glow-secondary);
    font-weight: 400;
}

.score-panel {
    display: flex;
    gap: 32px;
}

.score-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.score-label {
    font-size: 9px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    font-weight: 400;
}

.score-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 22px;
    font-weight: 700;
    color: var(--neon-secondary);
    text-shadow: var(--glow-secondary);
    letter-spacing: 1px;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--neon-accent);
    border-radius: 6px;
    padding: 10px 14px;
    cursor: pointer;
    color: var(--neon-accent);
    font-size: 18px;
    transition: all 0.25s ease;
}

.theme-toggle:hover {
    background: rgba(204, 0, 204, 0.15);
}

.game-container {
    position: relative;
    display: flex;
    justify-content: center;
    padding: 8px;
}

#gameCanvas {
    border: 1px solid var(--neon-primary);
    border-radius: 6px;
    background-color: var(--bg-grid);
    box-shadow: 0 0 10px rgba(45, 184, 16, 0.15), inset 0 0 30px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    height: auto;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(10, 10, 15, 0.9);
    border-radius: 6px;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    text-align: center;
    padding: 20px;
}

.overlay-title {
    font-size: 22px;
    color: var(--neon-primary);
    text-shadow: var(--glow-primary);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.overlay-text {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.overlay-score {
    font-family: 'JetBrains Mono', monospace;
    font-size: 18px;
    color: var(--neon-secondary);
    text-shadow: var(--glow-secondary);
    margin-bottom: 20px;
}

.overlay-hint {
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.lives-panel {
    display: none;
    justify-content: center;
    align-items: center;
    gap: 10px;
    padding: 12px;
}

.lives-panel.visible {
    display: flex;
}

.lives-label {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    font-weight: 400;
}

.lives {
    display: flex;
    gap: 6px;
}

.life {
    width: 16px;
    height: 16px;
    background-color: var(--neon-accent);
    border-radius: 50%;
    box-shadow: var(--glow-accent);
    animation: lifePulse 2s infinite;
}

.life.lost {
    background-color: var(--text-secondary);
    box-shadow: none;
    animation: none;
}

@keyframes lifePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.92); opacity: 0.8; }
}

.mobile-controls {
    display: flex;
    justify-content: center;
    padding: 16px 0 8px;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 48px;
    background: transparent;
    border: 1px solid var(--neon-secondary);
    border-radius: 6px;
    color: var(--neon-secondary);
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 2px;
}

.action-btn:hover {
    background: rgba(0, 168, 176, 0.1);
}

.action-btn:active {
    transform: scale(0.97);
    background: rgba(0, 168, 176, 0.2);
}

.mode-selector {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 8px 0;
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: transparent;
    border: 1px solid var(--text-secondary);
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 1px;
}

.mode-btn:hover {
    border-color: var(--neon-secondary);
    color: var(--neon-secondary);
}

.mode-btn.active {
    border-color: var(--neon-primary);
    color: var(--neon-primary);
    background: rgba(45, 184, 16, 0.08);
}

.mode-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--bg-grid);
    border-radius: 3px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 700;
}

.virtual-keyboard {
    display: none;
    justify-content: center;
    padding: 20px 0 12px;
}

.d-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.d-pad-row {
    display: flex;
    gap: 6px;
}

.d-pad-btn {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--neon-secondary);
    border-radius: 10px;
    color: var(--neon-secondary);
    font-size: 22px;
    cursor: pointer;
    transition: all 0.12s ease;
}

.d-pad-btn:active {
    background: rgba(0, 168, 176, 0.2);
    transform: scale(0.94);
}

.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .footer {
    border-top-color: rgba(0, 0, 0, 0.08);
}

.controls-info {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 10px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.controls-info i {
    margin-right: 4px;
}

.credits {
    font-size: 9px;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

@media (max-width: 768px) {
    .virtual-keyboard {
        display: flex;
    }

    .header {
        justify-content: center;
        text-align: center;
    }

    .score-panel {
        width: 100%;
        justify-content: center;
    }

    .mode-btn {
        padding: 8px 14px;
        font-size: 10px;
    }

    .d-pad-btn {
        width: 64px;
        height: 64px;
    }

    .container {
        padding: 20px;
        gap: 16px;
    }
}

@media (max-width: 400px) {
    body {
        padding: 8px;
    }

    .container {
        padding: 16px;
        gap: 14px;
    }

    .logo {
        font-size: 20px;
        letter-spacing: 3px;
    }

    .score-value {
        font-size: 18px;
    }

    .score-panel {
        gap: 24px;
    }

    #gameCanvas {
        width: 100%;
        max-width: 280px;
    }

    .controls-info {
        flex-direction: column;
        gap: 6px;
        align-items: center;
    }

    .header {
        gap: 14px;
    }

    .action-btn {
        padding: 12px 36px;
        font-size: 12px;
    }
}