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

body {
    background: #000000;
    color: #00ffff;
    font-family: 'Orbitron', monospace;
    overflow: hidden;
    user-select: none;
    cursor: crosshair;
}

/* Game Container */
#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(ellipse at center, #001111 0%, #000000 100%);
}

/* Game Canvas */
#gameCanvas {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    box-shadow: 0 0 50px rgba(0, 255, 255, 0.3);
}

/* Screen Overlays */
.screen-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    backdrop-filter: blur(5px);
}

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

.screen-content {
    text-align: center;
    padding: 40px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Titles */
.game-title {
    font-size: 72px;
    font-weight: 900;
    color: #00ffff;
    text-shadow: 
        0 0 10px #00ffff,
        0 0 20px #00ffff,
        0 0 30px #00ffff,
        0 0 40px #0088ff;
    margin-bottom: 20px;
    letter-spacing: 8px;
    animation: neonFlicker 2s infinite alternate;
}

@keyframes neonFlicker {
    0%, 100% {
        text-shadow: 
            0 0 10px #00ffff,
            0 0 20px #00ffff,
            0 0 30px #00ffff,
            0 0 40px #0088ff;
    }
    50% {
        text-shadow: 
            0 0 15px #00ffff,
            0 0 25px #00ffff,
            0 0 35px #00ffff,
            0 0 50px #0088ff;
    }
}

.subtitle {
    font-size: 24px;
    color: #ff00ff;
    margin-bottom: 40px;
    letter-spacing: 4px;
    text-shadow: 0 0 10px #ff00ff;
}

.game-over-title, .high-scores-title, .pause-title {
    font-size: 48px;
    font-weight: 700;
    color: #ff00ff;
    text-shadow: 
        0 0 10px #ff00ff,
        0 0 20px #ff00ff;
    margin-bottom: 30px;
    letter-spacing: 6px;
}

/* Neon Buttons */
.neon-button {
    background: transparent;
    color: #00ffff;
    border: 2px solid #00ffff;
    padding: 15px 40px;
    font-family: 'Orbitron', monospace;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    margin: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    box-shadow: 
        0 0 10px rgba(0, 255, 255, 0.5),
        inset 0 0 10px rgba(0, 255, 255, 0.1);
}

.neon-button:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: 
        0 0 20px rgba(0, 255, 255, 0.8),
        inset 0 0 20px rgba(0, 255, 255, 0.2);
    transform: scale(1.05);
}

.neon-button.small {
    padding: 8px 20px;
    font-size: 14px;
}

/* Controls Info */
.controls-info {
    margin-top: 40px;
    padding: 20px;
    border: 1px solid rgba(0, 255, 255, 0.3);
    background: rgba(0, 255, 255, 0.05);
}

.controls-info p {
    font-size: 14px;
    margin: 8px 0;
    color: #00ff00;
    letter-spacing: 1px;
}

/* Credits */
.credits {
    margin-top: 40px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 2px;
}

/* Score Display */
.final-score {
    margin: 30px 0;
}

.final-score p:first-child {
    font-size: 20px;
    color: #ffff00;
    margin-bottom: 10px;
}

.score-value {
    font-size: 48px;
    font-weight: 900;
    color: #00ffff;
    text-shadow: 
        0 0 10px #00ffff,
        0 0 20px #00ffff;
}

/* High Score Entry */
.high-score-entry {
    margin: 30px 0;
    padding: 20px;
    border: 2px solid #ff00ff;
    background: rgba(255, 0, 255, 0.05);
}

.high-score-entry p {
    font-size: 18px;
    margin: 10px 0;
    color: #ff00ff;
}

.name-input {
    background: transparent;
    border: 2px solid #00ffff;
    color: #00ffff;
    padding: 10px;
    font-family: 'Orbitron', monospace;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    width: 120px;
    letter-spacing: 8px;
    text-transform: uppercase;
    margin: 10px 0;
}

.name-input:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.8);
}

/* Scores List */
.scores-list {
    margin: 30px 0;
    padding: 20px;
    min-width: 400px;
}

.score-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    margin: 5px 0;
    font-size: 20px;
    border: 1px solid rgba(0, 255, 255, 0.2);
    background: rgba(0, 255, 255, 0.05);
}

.score-row.highlight {
    border-color: #ff00ff;
    background: rgba(255, 0, 255, 0.1);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 0, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 0, 255, 0.8);
    }
}

.score-rank {
    color: #ffff00;
    font-weight: 700;
}

.score-name {
    color: #00ffff;
    letter-spacing: 4px;
}

.score-points {
    color: #00ff00;
    font-weight: 700;
}

/* HUD */
#gameHud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

#gameHud.hidden {
    display: none;
}

.hud-top {
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: 0 50px;
}

.hud-bottom {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
}

.score-display, .wave-display, .high-score-display {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.label {
    font-size: 14px;
    color: #ffff00;
    letter-spacing: 2px;
    margin-bottom: 5px;
    text-shadow: 0 0 5px rgba(255, 255, 0, 0.5);
}

.value {
    font-size: 28px;
    font-weight: 900;
    color: #00ffff;
    letter-spacing: 3px;
    text-shadow: 
        0 0 10px rgba(0, 255, 255, 0.8),
        0 0 20px rgba(0, 255, 255, 0.4);
}

/* Ammo Display */
.ammo-display {
    display: flex;
    gap: 100px;
}

.base-ammo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border: 2px solid rgba(0, 255, 255, 0.5);
    background: rgba(0, 255, 255, 0.1);
}

.base-ammo.depleted {
    border-color: rgba(255, 0, 0, 0.5);
    background: rgba(255, 0, 0, 0.1);
}

.base-ammo.destroyed {
    opacity: 0.3;
    border-color: rgba(128, 128, 128, 0.5);
}

.base-label {
    font-size: 18px;
    font-weight: 700;
    color: #00ff00;
}

.ammo-count {
    font-size: 24px;
    font-weight: 900;
    color: #00ffff;
    min-width: 30px;
    text-align: center;
}

.base-ammo.depleted .ammo-count {
    color: #ff0000;
}

/* CRT Effect */
#game-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        repeating-linear-gradient(
            0deg,
            rgba(0, 255, 255, 0.03) 0px,
            transparent 1px,
            transparent 2px,
            rgba(0, 255, 255, 0.03) 3px
        );
    pointer-events: none;
    z-index: 100;
}

/* Animation for wave complete */
@keyframes waveComplete {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.wave-complete {
    animation: waveComplete 1s ease-in-out;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .game-title {
        font-size: 48px;
    }
    
    .subtitle {
        font-size: 18px;
    }
    
    .neon-button {
        padding: 12px 30px;
        font-size: 16px;
    }
    
    .hud-top {
        padding: 0 20px;
    }
    
    .value {
        font-size: 22px;
    }
    
    .ammo-display {
        gap: 40px;
    }
}