/* 
 * 3D Graphics Engine CSS
 * Premium dark mode styling & CSS3D preserve-3d transforms
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-main: #090d16;
    --bg-card: rgba(15, 23, 42, 0.75);
    --bg-card-border: rgba(255, 255, 255, 0.1);
    --bg-input: rgba(30, 41, 59, 0.7);
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.35);
    --accent-cyan: #06b6d4;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    user-select: none;
    -webkit-user-select: none;
}

/* 3D Viewport */
#viewport {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
    cursor: grab;
    background: radial-gradient(circle at 50% 40%, #1e1b4b 0%, #0b0f19 60%, #030712 100%);
}

#viewport:active {
    cursor: grabbing;
}

/* 3D Core Transformations */
.scene-world {
    transform-style: preserve-3d;
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0px;
    height: 0px;
    will-change: transform;
}

.obj3d {
    transform-style: preserve-3d;
    position: absolute;
    will-change: transform;
}

/* Shape Faces */
.box-face, .cylinder-face, .plane-face {
    box-sizing: border-box;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: filter 0.05s ease-out;
    backface-visibility: visible;
}

/* Wireframe Mode Class */
.wireframe .box-face,
.wireframe .cylinder-face,
.wireframe .plane-face {
    background-color: rgba(99, 102, 241, 0.15) !important;
    border: 1.5px solid #818cf8 !important;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

/* 3D Ground Grid */
.ground-grid {
    position: absolute;
    width: 800px;
    height: 800px;
    left: -400px;
    top: -400px;
    transform: rotateX(90deg) translateZ(80px);
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
    background-size: 40px 40px;
    border-radius: 50%;
    mask-image: radial-gradient(circle, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 80%);
    -webkit-mask-image: radial-gradient(circle, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 80%);
    pointer-events: none;
}

/* UI Overlay Layer */
.ui-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    justify-content: space-between;
    padding: 24px;
    z-index: 100;
}

.interactive-panel {
    pointer-events: auto;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
}

.interactive-panel::-webkit-scrollbar {
    width: 6px;
}
.interactive-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

/* Left Brand / Mode Panel */
.panel-left {
    width: 320px;
}

/* Right Inspector Panel */
.panel-right {
    width: 340px;
}

/* Header & Typography */
.brand-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent), var(--accent-cyan));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    box-shadow: 0 0 20px var(--accent-glow);
}

.brand-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-badge {
    font-size: 10px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--accent);
    color: #a5b4fc;
    padding: 2px 6px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
}

.section-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Tabs & Buttons */
.tab-group {
    display: flex;
    background: var(--bg-input);
    padding: 4px;
    border-radius: var(--radius-md);
    gap: 4px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.btn-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.btn-action {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    color: var(--text-main);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-action:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.btn-action.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Controls & Form Inputs */
.control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 13px;
}

.control-label {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 160px;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: #334155;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 6px var(--accent-glow);
    transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.val-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--accent-cyan);
    min-width: 32px;
    text-align: right;
}

/* Color Pickers */
.color-picker-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.color-input-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: var(--bg-input);
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--bg-card-border);
}

.color-input-card span {
    font-size: 11px;
    color: var(--text-muted);
}

.color-input-card input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    background: none;
}

.color-input-card input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input-card input[type="color"]::-webkit-color-swatch {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
}

/* Bottom Camera / Stats Bar */
.bottom-bar {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: auto;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--bg-card-border);
    border-radius: 30px;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 12px;
    color: var(--text-muted);
    box-shadow: var(--shadow-glass);
}

.bottom-bar kbd {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    border: 1px solid var(--bg-card-border);
    color: var(--text-main);
}