:root {
    --neon-purple: #ff00ff;
    --neon-blue: #00d2ff;
    --neon-green: #39ff14;
    --neon-red: #ff3131;
    --bg-dark: #050505;
}

body,
html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: 'Orbitron', sans-serif;
    user-select: none;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

#gameCanvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* HUD Styling */
#hud {
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 10;
}

.top-row {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

#score {
    font-size: 2.2rem;
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 10px var(--neon-blue);
}

#stage-info {
    font-size: 1.5rem;
    color: var(--neon-purple);
    font-weight: 900;
    text-shadow: 0 0 10px var(--neon-purple);
    margin-bottom: 5px;
}

#progress-container {
    position: absolute;
    top: 100px;
    left: 40px;
    width: 250px;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    pointer-events: none;
}

#progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--neon-purple), var(--neon-blue));
    box-shadow: 0 0 15px var(--neon-blue);
    transition: width 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#best {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.4);
}

#gems {
    font-size: 1.5rem;
    color: var(--neon-purple);
    text-shadow: 0 0 5px var(--neon-purple);
}

/* Overlays */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.menu {
    text-align: center;
    padding: 40px;
    border: 2px solid var(--neon-blue);
    background: rgba(0, 0, 0, 0.9);
    box-shadow: 0 0 30px rgba(0, 210, 255, 0.3);
}

.neon-text {
    font-size: 4rem;
    color: #fff;
    text-shadow: 0 0 10px var(--neon-purple), 0 0 20px var(--neon-purple), 0 0 30px var(--neon-purple);
    margin-bottom: 20px;
}

.death-text {
    font-size: 4rem;
    color: var(--neon-red);
    text-shadow: 0 0 20px var(--neon-red);
    margin-bottom: 20px;
}

.win-text {
    font-size: 4rem;
    color: var(--neon-green);
    text-shadow: 0 0 20px var(--neon-green), 0 0 40px var(--neon-green);
    margin-bottom: 20px;
}

p {
    letter-spacing: 5px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 30px;
}

button {
    background: transparent;
    color: #fff;
    border: 3px solid var(--neon-green);
    padding: 15px 50px;
    font-family: inherit;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.2);
}

button:hover {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 30px var(--neon-green);
    transform: scale(1.05);
}

.hidden {
    display: none !important;
}