/* 1. THEME VARIABLES */
:root {
    --glow-cyan: #00f2ff;
    --glow-blue: #0072ff;
    --danger: #ff3e3e;
    --panel-bg: rgba(0, 8, 15, 0.75);
    --border-glass: rgba(0, 242, 255, 0.3);
}

/* 2. LAYOUT & BACKGROUND */
body, html {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    background-color: #000; /* Fallback */
    font-family: 'Rajdhani', sans-serif;
    color: #ffffff;
    overflow: hidden;
}

/* Background Image Layer */
.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('assets/background00.png') no-repeat center center;
    background-size: cover;
    z-index: -1;
    transition: filter 0.5s ease;
}

/* 3. GLASSMORPHISM PANELS */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5), 
                inset 0 0 15px rgba(0, 242, 255, 0.05);
    padding: 2rem;
}

/* 4. TYPOGRAPHY */
h1, h2, h3, .orbitron {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 4px;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
}

.hud-text {
    font-family: 'Share Tech Mono', monospace;
    letter-spacing: 1px;
    color: var(--glow-cyan);
}

/* 5. INTERACTIVE ELEMENTS */
.btn-mission {
    background: transparent;
    border: 2px solid var(--glow-cyan);
    color: var(--glow-cyan);
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    padding: 15px 40px;
    position: relative;
    overflow: hidden;
    transition: 0.3s all ease;
}

.btn-mission:hover {
    background: var(--glow-cyan);
    color: #000;
    box-shadow: 0 0 40px var(--glow-cyan);
    transform: scale(1.02);
}

.form-control {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--border-glass) !important;
    color: #fff !important;
    border-radius: 0;
}

.form-control:focus {
    box-shadow: 0 0 15px var(--glow-cyan) !important;
    background: rgba(255, 255, 255, 0.1) !important;
}

/* 6. GAME CANVAS UI */
#game-canvas {
    border: 1px solid var(--border-glass);
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
    display: block;
    margin: 0 auto;
}

/* 7. ANIMATIONS */
@keyframes warning-pulse {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}

.warning {
    color: var(--danger);
    animation: warning-pulse 1s infinite;
    text-shadow: 0 0 10px var(--danger);
}

/* 8. NAVIGATION */
.nav-doc {
    position: absolute;
    top: 30px;
    right: 40px;
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    font-size: 0.75rem;
    letter-spacing: 2px;
    border-bottom: 1px solid transparent;
    transition: 0.3s;
}

.nav-doc:hover {
    color: var(--glow-cyan);
    border-bottom: 1px solid var(--glow-cyan);
}