:root {
    --bg-color: #050510;
    --primary: #00F3FF;
    --secondary: #BC00DD;
    --accent: #FF0055;
    --text: #FFFFFF;
    --glass-bg: rgba(10, 15, 30, 0.7);
    --glass-border: rgba(0, 243, 255, 0.3);
    --font-main: 'Orbitron', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-color);
    color: var(--text);
    font-family: var(--font-main);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

.game-container {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #0B0E1C 0%, #030408 100%);
    z-index: 1;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    padding: 20px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-shadow: 0 0 10px var(--primary);
}

.score-container, .level-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.label {
    font-size: 0.8rem;
    color: var(--secondary);
    letter-spacing: 2px;
    text-shadow: none;
}

#score, #level {
    font-size: 2.5rem;
    font-weight: 900;
}

.lives-container {
    display: flex;
    gap: 10px;
}

.life-icon {
    width: 20px;
    height: 25px;
    border: 2px solid var(--primary);
    clip-path: polygon(50% 0%, 100% 100%, 50% 80%, 0% 100%);
    box-shadow: 0 0 10px var(--primary);
}

.powerup-notify {
    position: absolute;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: #FFD700;
    text-shadow: 0 0 15px #FFD700;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.powerup-notify.show {
    opacity: 1;
    animation: pulse 1s infinite alternate;
}

/* Modals */
.modal {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    text-align: center;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal p {
    font-size: 1.2rem;
    margin: 20px 0;
    max-width: 600px;
    line-height: 1.5;
    color: #A0AABF;
}

.accent-text {
    color: var(--primary) !important;
    text-shadow: 0 0 10px var(--primary);
    font-weight: 700;
}

.btn {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 15px 40px;
    font-size: 1.2rem;
    font-family: var(--font-main);
    font-weight: 900;
    letter-spacing: 2px;
    cursor: pointer;
    border-radius: 4px;
    text-transform: uppercase;
    transition: all 0.2s ease;
    box-shadow: inset 0 0 10px rgba(0, 243, 255, 0.2), 0 0 15px rgba(0, 243, 255, 0.4);
    margin-top: 30px;
    pointer-events: auto;
}

.btn:hover {
    background: var(--primary);
    color: #000;
    box-shadow: 0 0 30px var(--primary);
    transform: scale(1.05);
}

/* Glitch Effect for Titles */
.glitch {
    font-size: 4rem;
    font-weight: 900;
    text-transform: uppercase;
    position: relative;
    text-shadow: 0.05em 0 0 var(--secondary), -0.025em -0.05em 0 var(--primary),
                 0.025em 0.05em 0 var(--accent);
    animation: glitch 1s infinite;
}

.glitch span {
    position: absolute;
    top: 0; left: 0;
}

.error {
    text-shadow: 0.05em 0 0 #FF0000, -0.025em -0.05em 0 #FFA500;
}

@keyframes glitch {
    0% { text-shadow: 0.05em 0 0 var(--secondary), -0.05em -0.025em 0 var(--primary), -0.025em 0.05em 0 var(--accent); }
    14% { text-shadow: 0.05em 0 0 var(--secondary), -0.05em -0.025em 0 var(--primary), -0.025em 0.05em 0 var(--accent); }
    15% { text-shadow: -0.05em -0.025em 0 var(--secondary), 0.025em 0.025em 0 var(--primary), -0.05em -0.05em 0 var(--accent); }
    49% { text-shadow: -0.05em -0.025em 0 var(--secondary), 0.025em 0.025em 0 var(--primary), -0.05em -0.05em 0 var(--accent); }
    50% { text-shadow: 0.025em 0.05em 0 var(--secondary), 0.05em 0 0 var(--primary), 0 -0.05em 0 var(--accent); }
    99% { text-shadow: 0.025em 0.05em 0 var(--secondary), 0.05em 0 0 var(--primary), 0 -0.05em 0 var(--accent); }
    100% { text-shadow: -0.025em 0 0 var(--secondary), -0.025em -0.025em 0 var(--primary), -0.025em -0.05em 0 var(--accent); }
}

@keyframes pulse {
    0% { transform: translateX(-50%) scale(1); }
    100% { transform: translateX(-50%) scale(1.1); }
}