:root {
    --neon-blue: #00d2ff;
    --neon-red: #ff3e3e;
    --metal-dark: #1a1a2e;
    --metal-light: #2c3e50;
    --accent: #f1c40f;
    --glass: rgba(26, 26, 46, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Rajdhani', sans-serif;
    user-select: none;
}

body {
    background: #000;
    color: white;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

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

canvas {
    display: block;
}

/* HUD */
#hud {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    padding: 30px;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.stats-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.player-stat {
    width: 300px;
    background: var(--glass);
    border: 2px solid var(--neon-blue);
    padding: 15px;
    clip-path: polygon(0 0, 100% 0, 90% 100%, 0 100%);
}

.player-stat.enemy {
    border-color: var(--neon-red);
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0 100%);
    text-align: right;
}

.label {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
    color: var(--neon-blue);
}

.enemy .label { color: var(--neon-red); }

.hp-bar-outer {
    width: 100%;
    height: 12px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

.hp-fill {
    width: 100%;
    height: 100%;
    background: var(--neon-blue);
    box-shadow: 0 0 10px var(--neon-blue);
    transition: width 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.enemy .hp-fill { 
    background: var(--neon-red); 
    box-shadow: 0 0 10px var(--neon-red);
    margin-left: auto;
}

.vs {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    color: white;
    text-shadow: 0 0 20px rgba(255,255,255,0.5);
    margin-top: 10px;
}

#combat-log {
    align-self: center;
    background: rgba(0,0,0,0.5);
    padding: 5px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--accent);
    letter-spacing: 1px;
    border: 1px solid rgba(241, 196, 15, 0.3);
}

.controls-hint {
    align-self: center;
    background: var(--glass);
    padding: 10px 30px;
    border-radius: 10px;
    font-size: 0.8rem;
    opacity: 0.7;
    border: 1px solid rgba(255,255,255,0.1);
}

/* OVERLAYS */
.overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(circle, rgba(44, 62, 80, 0.4) 0%, rgba(0,0,0,0.9) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.tech-box {
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.9) 0%, rgba(26, 26, 46, 0.9) 100%);
    padding: 60px;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(0, 210, 255, 0.3);
    box-shadow: 0 0 50px rgba(0,0,0,0.5), inset 0 0 20px rgba(0, 210, 255, 0.1);
    backdrop-filter: blur(10px);
    max-width: 600px;
    width: 90%;
}

.glitch {
    font-family: 'Orbitron', sans-serif;
    font-size: 4.5rem;
    font-weight: 900;
    position: relative;
    color: white;
    text-transform: uppercase;
}

.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 #ff00c1;
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 #00fff9, 2px 2px #ff00c1;
    animation: glitch-anim2 1s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(31px, 9999px, 94px, 0); }
    20% { clip: rect(62px, 9999px, 42px, 0); }
    40% { clip: rect(16px, 9999px, 78px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    100% { clip: rect(0, 9999px, 30px, 0); }
}

#start-btn {
    margin-top: 40px;
    padding: 20px 50px;
    background: transparent;
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

#start-btn:hover {
    background: var(--neon-blue);
    color: black;
    box-shadow: 0 0 30px var(--neon-blue);
}

.hidden { display: none !important; }