/* Sonoluminescence Lab Styles */

:root {
    --color-void: #0a0a1f;
    --color-void-light: #12122a;
    --color-plasma-cyan: #00fff2;
    --color-plasma-blue: #0ea5e9;
    --color-plasma-purple: #a855f7;
    --color-text: #e5e7eb;
    --color-text-muted: #9ca3af;
    --color-text-dim: #6b7280;
    --font-main: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --safe-top: env(safe-area-inset-top, 20px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
    font-family: var(--font-main);
    background: var(--color-void);
    color: var(--color-text);
    height: 100%;
    overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100%; position: relative; }

#background-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Header */
.lab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--safe-top) + 10px) 20px 10px;
    background: rgba(10, 10, 31, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    z-index: 100;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.3s;
}
.back-link:hover { color: var(--color-plasma-cyan); }

.lab-title { text-align: center; }
.lab-title h1 { font-size: 1.3rem; font-weight: 600; }
.lab-tagline { font-size: 0.8rem; color: var(--color-plasma-cyan); }

/* Main Layout */
.lab-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 320px;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

/* Visualization Section */
.viz-section {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(ellipse at center, #0a1020 0%, #050510 100%);
    overflow: hidden;
}

#bubble-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}

/* Bubble */
.bubble-container {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.bubble {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: relative;
    transition: transform 0.05s ease-out;
}

.bubble-surface {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.4), rgba(100,200,255,0.2) 50%, rgba(50,100,150,0.3));
    border: 2px solid rgba(255,255,255,0.3);
}

.bubble-highlight {
    position: absolute;
    top: 15%;
    left: 20%;
    width: 30%;
    height: 20%;
    background: rgba(255,255,255,0.6);
    border-radius: 50%;
    filter: blur(3px);
}

.bubble-glow {
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,255,242,0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.1s;
}

.flash {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,1) 0%, rgba(0,255,242,0.5) 30%, transparent 70%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.05s;
}

.flash.active {
    opacity: 1;
    animation: flash-burst 0.15s ease-out;
}

@keyframes flash-burst {
    0% { transform: scale(0.1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Status Panel */
.status-panel {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 20px;
    padding: 15px 20px;
    background: rgba(10,10,31,0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.status-label {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
}

.status-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text);
}

.status-item.highlight .status-value {
    color: var(--color-plasma-cyan);
    text-shadow: 0 0 10px var(--color-plasma-cyan);
}

/* Phase Indicator */
.phase-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
}

.phase-bar {
    height: 8px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.phase-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-plasma-blue), var(--color-plasma-cyan), #fff);
    border-radius: 4px;
    transition: width 0.05s;
}

.phase-marker {
    position: absolute;
    top: -3px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-plasma-cyan);
    transition: left 0.05s;
}

.phase-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.7rem;
    color: var(--color-text-dim);
}

/* Controls Panel */
.controls-panel {
    background: var(--color-void-light);
    border-left: 1px solid rgba(255,255,255,0.05);
    padding: 20px;
    overflow-y: auto;
}

.panel-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.panel-section:last-of-type { border-bottom: none; }

.panel-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-text);
}

.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.control-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-plasma-cyan);
    margin-top: 5px;
}

/* Sliders */
.slider {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    -webkit-appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-plasma-purple);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-plasma-purple);
}

.slider-cyan::-webkit-slider-thumb { background: var(--color-plasma-cyan); box-shadow: 0 0 10px var(--color-plasma-cyan); }
.slider-purple::-webkit-slider-thumb { background: var(--color-plasma-purple); box-shadow: 0 0 10px var(--color-plasma-purple); }

/* Gas Buttons */
.gas-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.gas-btn {
    padding: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s;
}

.gas-btn:hover { border-color: rgba(255,255,255,0.2); }
.gas-btn.active {
    background: rgba(0,255,242,0.15);
    border-color: var(--color-plasma-cyan);
    color: var(--color-plasma-cyan);
}

/* Action Buttons */
.btn-group {
    display: flex;
    gap: 10px;
}

.action-btn {
    flex: 1;
    padding: 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--color-text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

.action-btn:hover {
    background: rgba(0,255,242,0.1);
    border-color: var(--color-plasma-cyan);
}

/* Info Panel */
.info-panel {
    background: rgba(0,0,0,0.3);
    border-radius: 12px;
    padding: 15px;
    border-left: 3px solid var(--color-plasma-purple);
}

.info-panel h4 {
    font-size: 0.85rem;
    margin-bottom: 10px;
    color: var(--color-plasma-purple);
}

.info-panel p {
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.info-panel strong { color: var(--color-plasma-cyan); }

.equation {
    font-family: 'Times New Roman', serif;
    font-size: 0.9rem;
    color: var(--color-plasma-cyan);
    text-align: center;
    padding: 10px;
    background: rgba(0,255,242,0.05);
    border-radius: 6px;
}

/* Responsive */
@media (max-width: 900px) {
    .lab-main {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }
    .controls-panel {
        max-height: 40vh;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.05);
    }
    .status-panel { flex-wrap: wrap; gap: 10px; }
}