:root {
    --bg-color: #05050a;
    --neon-cyan: #00f2ff;
    --neon-magenta: #ff00ea;
    --neon-gold: #ffcc00;
    --text-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    background: url('bg.png') no-repeat center center;
    background-size: cover;
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.8);
}

canvas {
    display: block;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

#ui-layer > * {
    pointer-events: auto;
}

.screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: 24px;
    width: 90%;
    max-width: 500px;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.screen.hidden {
    opacity: 0;
    transform: translate(-50%, -40%);
    pointer-events: none;
}

.logo {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 0.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    text-shadow: 0 0 20px var(--neon-cyan);
}

.logo span {
    color: var(--neon-cyan);
}

.subtitle {
    font-size: 1.2rem;
    letter-spacing: 0.5rem;
    margin-bottom: 2rem;
    opacity: 0.7;
    text-transform: uppercase;
}

.controls-hint {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: 0.9rem;
    opacity: 0.6;
}

.glow-btn {
    background: transparent;
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
}

.glow-btn:hover {
    background: var(--neon-cyan);
    color: var(--bg-color);
    box-shadow: 0 0 30px var(--neon-cyan);
    transform: translateY(-3px);
}

/* HUD Styling */
#hud {
    position: absolute;
    top: 2rem;
    left: 2rem;
    right: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: opacity 0.3s ease;
}

#hud.hidden {
    opacity: 0;
}

.hud-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.score-container .label {
    font-size: 0.7rem;
    opacity: 0.6;
    margin-right: 0.5rem;
}

#score-val {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--neon-gold);
}

.health-container {
    width: 200px;
}

#health-bar-bg {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

#health-bar-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
    transition: width 0.3s ease;
}

.title {
    font-size: 2.5rem;
    color: var(--neon-magenta);
    text-shadow: 0 0 20px var(--neon-magenta);
    margin-bottom: 2rem;
}

.stats {
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

#final-score {
    color: var(--neon-gold);
    font-weight: 700;
}