:root {
    --bg-color: #0d0d0d;
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-yellow: #f3ff00;
    --text-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --hue: 0;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.5s ease;
}

/* Rainbow background container */
#rainbow-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, hsla(var(--hue), 70%, 20%, 0.3), transparent 70%);
    pointer-events: none;
    z-index: -1;
    transition: background 0.3s ease;
}

#game-container {
    position: relative;
    width: 800px; /* Increased for overhaul */
    height: 1200px; /* Increased for overhaul */
    background: #1a1a1a;
    border: 4px solid var(--neon-blue);
    box-shadow: 0 0 20px var(--neon-blue), inset 0 0 10px rgba(0, 243, 255, 0.2);
    border-radius: 40px 40px 10px 10px;
    display: flex;
    flex-direction: column;
    transform: scale(0.65); /* Scale down for typical desktop viewports */
    transform-origin: center center;
}

canvas {
    width: 100%;
    height: 100%;
    border-radius: 36px 36px 6px 6px;
}

.ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    padding: 20px;
    justify-content: space-between;
}

.score-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 15px 25px;
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: auto;
}

.score-text {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
}

.charge-container {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    height: 40px;
    width: 200px;
    align-self: center;
    border-radius: 20px;
    padding: 5px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

#charge-bar {
    height: 100%;
    width: 0%; /* Dynamic */
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
    border-radius: 15px;
    box-shadow: 0 0 15px var(--neon-blue);
    transition: width 0.1s linear, box-shadow 0.3s ease;
}

.controls-hint {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 10px 20px;
    border-radius: 15px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    align-self: center;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.controls-hint.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    border: 2px solid var(--neon-pink);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    display: none; /* Hidden by default */
    pointer-events: auto;
    z-index: 10;
}

.game-over h2 {
    color: var(--neon-pink);
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 0 0 15px var(--neon-pink);
}

.btn {
    background: transparent;
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.btn:hover {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 20px var(--neon-blue);
}

.status-indicator {
    background: rgba(243, 255, 0, 0.1);
    border: 1px solid var(--neon-yellow);
    color: var(--neon-yellow);
    padding: 5px 15px;
    border-radius: 10px;
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    font-weight: 700;
    text-shadow: 0 0 10px var(--neon-yellow);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.status-indicator.active {
    opacity: 1;
}