/* 
    COSMIC MATH STYLESHEET
    Theme: Deep Space Cyberpunk
*/

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Noto+Sans+Armenian:wght@400;700&display=swap');

:root {
    --space-black: #050505;
    --neon-blue: #00f3ff;
    --neon-purple: #bc13fe;
    --glass-bg: rgba(10, 20, 40, 0.65);
    --border-glow: 1px solid rgba(0, 243, 255, 0.3);
    --font-ui: 'Noto Sans Armenian', sans-serif;
    --font-code: 'Share Tech Mono', monospace;
}

body {
    margin: 0;
    overflow: hidden;
    background: var(--space-black);
    color: white;
    font-family: var(--font-ui);
}

/* LOADING SCREEN */
#loader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: #000;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 1s;
}

.loader-content {
    text-align: center;
    width: 300px;
}

.progress-bar {
    height: 4px;
    background: #333;
    margin-top: 20px;
    border-radius: 2px;
    overflow: hidden;
}

.fill {
    width: 0%;
    height: 100%;
    background: var(--neon-blue);
    animation: load 2s ease-in-out forwards;
}

@keyframes load { 100% { width: 100%; } }

/* HUD LAYOUT */
#hud {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; /* Let clicks pass through to 3D */
    padding: 20px;
    box-sizing: border-box;
    display: grid;
    grid-template-rows: auto 1fr auto;
    grid-template-columns: 1fr auto;
}

/* HEADER */
header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--border-glow);
    padding-bottom: 10px;
    background: linear-gradient(90deg, rgba(0,0,0,0), rgba(0,243,255,0.1), rgba(0,0,0,0));
}

.mission-log h3 { margin: 0; color: var(--neon-blue); letter-spacing: 2px; }
.mission-log small { color: #888; font-family: var(--font-code); }
.timer { font-family: var(--font-code); font-size: 1.5rem; color: var(--neon-purple); }

/* MODULE SELECTOR (Right Side) */
.module-selector {
    grid-column: 2;
    grid-row: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 15px;
    pointer-events: auto;
}

.mod-btn {
    background: var(--glass-bg);
    border: var(--border-glow);
    color: white;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
    width: 250px;
    border-radius: 0 20px 0 20px; /* Sci-fi shape */
}

.mod-btn:hover, .mod-btn.active {
    background: rgba(0, 243, 255, 0.2);
    border-color: var(--neon-blue);
    transform: translateX(-10px);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
}

.mod-btn .icon { font-size: 1.5rem; }
.mod-btn .label { font-weight: bold; text-transform: uppercase; }

/* DATA PANEL (Bottom Left) */
.data-panel {
    grid-column: 1;
    grid-row: 3;
    width: 400px;
    background: var(--glass-bg);
    border: 1px solid rgba(255,255,255,0.1);
    border-left: 4px solid var(--neon-purple);
    padding: 20px;
    backdrop-filter: blur(15px);
    pointer-events: auto;
    border-radius: 10px;
}

#topic-title { margin-top: 0; color: var(--neon-purple); text-transform: uppercase; }
#topic-desc { font-size: 0.9rem; line-height: 1.6; color: #ddd; }

.formula-display {
    background: rgba(0,0,0,0.5);
    font-family: var(--font-code);
    color: var(--neon-blue);
    padding: 15px;
    margin: 15px 0;
    text-align: center;
    border: 1px dashed #444;
    font-size: 1.1rem;
}

/* CONTROLS AREA */
.controls-area label {
    display: block;
    font-size: 0.8rem;
    color: var(--neon-blue);
    margin-bottom: 5px;
}

input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    background: transparent;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 16px;
    width: 16px;
    background: var(--neon-purple);
    border-radius: 50%;
    cursor: pointer;
    margin-top: -6px;
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: #333;
}

/* DEBUG PANEL */
.debug-panel {
    position: absolute;
    top: 80px;
    right: 20px;
    text-align: right;
    font-family: var(--font-code);
    font-size: 0.7rem;
    color: #666;
}

canvas {
    display: block;
    position: absolute;
    top: 0; left: 0;
    z-index: -1;
}

/* --- MOBILE RESPONSIVE OVERRIDES (ADDED) --- */
@media (max-width: 768px) {
    #hud {
        display: flex;
        flex-direction: column;
        padding: 10px;
        gap: 10px;
    }

    header {
        flex-direction: row;
        font-size: 0.7rem;
        padding-bottom: 5px;
    }

    .timer { font-size: 1rem; }

    .module-selector {
        flex-direction: row;
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
        padding: 5px 0;
        gap: 10px;
        -webkit-overflow-scrolling: touch;
    }

    .mod-btn {
        width: auto;
        min-width: 160px;
        padding: 10px;
        font-size: 0.8rem;
        flex-shrink: 0;
        transform: none !important; /* Disable horizontal slide on mobile */
    }

    .data-panel {
        width: 100%;
        max-width: none;
        margin-top: auto; /* Push to bottom */
        padding: 15px;
    }

    #topic-title { font-size: 1.2rem; }
    #topic-desc { font-size: 0.8rem; margin-bottom: 10px; }
    .formula-display { padding: 8px; font-size: 0.9rem; margin: 10px 0; }

    .debug-panel {
        display: none; /* Hide for space on phones */
    }
}