/* ========================================
   DEM2STL - CYBERPUNK STYLES
   Based on main dashboard theme
   ======================================== */

:root {
    --terminal-green: #00ff41;
    --terminal-green-dim: #00cc33;
    --neon-cyan: #00ffff;
    --neon-pink: #ff0080;
    --neon-purple: #bf00ff;
    --terminal-bg: #0a0a0a;
    --terminal-bg-light: #0f0f0f;
    --surface-bg: #1a1a1a;
    --surface-bg-light: #252525;
    --border-color: #333;
    --text-primary: #00ff41;
    --text-secondary: #888;
    --text-muted: #666;
    --text-white: #f0f0f0;
    --error-red: #ff0040;
    
    --font-mono: 'Fira Code', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    --glow-green: 0 0 10px rgba(0, 255, 65, 0.5), 0 0 20px rgba(0, 255, 65, 0.3);
    --glow-cyan: 0 0 10px rgba(0, 255, 255, 0.5), 0 0 20px rgba(0, 255, 255, 0.3);
    --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-mono);
    background-color: var(--terminal-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: var(--spacing-xl);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15),
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
    opacity: 0.3;
}

::selection {
    background-color: var(--terminal-green);
    color: var(--terminal-bg);
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--surface-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--terminal-green-dim);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--terminal-green);
    box-shadow: var(--glow-green);
}

/* ========================================
   BACK HOME LINK
   ======================================== */

.back-home {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--neon-cyan);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-decoration: none;
    z-index: 100;
    transition: color var(--transition-fast);
}

.back-home:hover {
    color: var(--terminal-green);
}

/* ========================================
   HEADER & TITLE
   ======================================== */

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--terminal-green);
    text-shadow: var(--glow-green);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   PROCESS FLOW - THREE IMAGES
   ======================================== */

.process-flow {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 280px;
    text-align: center;
}

.process-image {
    width: 100%;
    max-width: 250px;
    height: auto;
    aspect-ratio: 4/3;
    object-fit: cover;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition-normal);
    background: var(--surface-bg);
}

.process-image:hover {
    border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    transform: scale(1.02);
}

.process-label {
    margin-top: var(--spacing-md);
    color: var(--neon-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--terminal-green);
    text-shadow: var(--glow-green);
    padding: var(--spacing-xl) var(--spacing-md);
}

/* ========================================
   EXPLANATION SECTION
   ======================================== */

.explanation {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    padding: var(--spacing-xl);
    background-color: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
}

.explanation-title {
    color: var(--terminal-green);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: var(--glow-green);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.explanation-title::before {
    content: '>';
    color: var(--neon-pink);
}

.explanation p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.explanation ul {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.explanation li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.explanation li::before {
    content: '>';
    color: var(--neon-pink);
    font-weight: bold;
}

.explanation a {
    color: var(--neon-cyan);
    text-decoration: none;
    transition: var(--transition-fast);
}

.explanation a:hover {
    color: var(--terminal-green);
    text-shadow: var(--glow-green);
}

/* ========================================
   UPLOAD SECTION
   ======================================== */

.upload-title {
    color: var(--terminal-green);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: var(--glow-green);
}

.file-input-wrapper {
    position: relative;
    display: inline-block;
}

.file-input-wrapper input[type="file"] {
    display: none;
}

.file-input-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--terminal-bg-light);
    border: 2px solid var(--terminal-green-dim);
    border-radius: 8px;
    color: var(--terminal-green);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: var(--transition-fast);
}

.file-input-label:hover {
    background-color: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: var(--glow-green);
}

.file-input-label i {
    font-size: 1.2rem;
}

/* ========================================
   3D PREVIEW
   ======================================== */

.preview-section {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

.preview-container {
    background-color: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    display: inline-block;
    min-width: fit-content;
}

.preview-header {
    background-color: var(--terminal-bg-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.preview-header::before {
    content: '●';
    color: var(--terminal-green);
}

.preview-content {
    display: flex;
    min-height: 600px;
}

.viewer-3d {
    flex: 0 0 600px !important;
    width: 600px !important;
    height: 600px !important;
    max-width: 600px !important;
    min-height: 600px !important;
    position: relative;
    transition: all 0.3s ease;
}

.viewer-3d > canvas {
    width: 600px !important;
    height: 600px !important;
}

.viewer-2d {
    flex: 0 0 600px !important;
    width: 600px !important;
    height: 600px !important;
    max-width: 600px !important;
    min-height: 600px !important;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--terminal-bg);
    transition: all 0.3s ease;
}

#elevationCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
}

.placeholder-content {
    color: var(--text-muted);
    font-size: 1.2rem;
    text-align: center;
    position: relative;
    z-index: 1;
    pointer-events: none;
}

.viewer-3d.drag-over {
    background: rgba(0, 255, 255, 0.05);
}

.viewer-3d.drag-over::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px dashed var(--neon-cyan);
    pointer-events: none;
    z-index: 10;
}

.viewer-3d.drag-over::after {
    content: 'Drop file here';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--neon-cyan);
    font-size: 1.2rem;
    text-shadow: var(--glow-cyan);
}

.viewer-2d.drag-over {
    background: rgba(0, 255, 255, 0.05);
}

.viewer-2d.drag-over::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px dashed var(--neon-cyan);
    pointer-events: none;
    z-index: 10;
}

.viewer-2d.drag-over::after {
    content: 'Drop file here';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--neon-cyan);
    font-size: 1.2rem;
    text-shadow: var(--glow-cyan);
}

.viewer-sidebar {
    width: 280px;
    background-color: var(--terminal-bg-light);
    border-left: 2px solid var(--border-color);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sidebar-empty {
    color: var(--text-muted);
    text-align: center;
    font-size: 0.9rem;
}

.upload-panel {
    width: 280px;
    background-color: var(--terminal-bg-light);
    border-left: 2px solid var(--border-color);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-md);
}

.upload-panel .upload-title {
    margin-bottom: 0;
    text-align: center;
}

.upload-panel .upload-hint {
    text-align: center;
}

.upload-panel .file-input-wrapper {
    display: flex;
    justify-content: center;
}

.invert-toggle-wrapper {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-sm);
}

/* Progress */
.progress-container {
    text-align: center;
}

.progress-bar {
    height: 20px;
    background-color: var(--surface-bg);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--terminal-green-dim), var(--terminal-green));
    border-radius: 10px;
    transition: width 0.3s ease;
    box-shadow: var(--glow-green);
}

.progress-status {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Processing Animation */
.processing-container {
    text-align: center;
}

.processing-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-lg);
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--terminal-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: var(--glow-green);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.processing-text {
    color: var(--terminal-green);
    font-size: 1rem;
    text-shadow: var(--glow-green);
}

/* Download */
.download-container {
    text-align: center;
}

.download-ready {
    color: var(--terminal-green);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: var(--glow-green);
}

.download-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--surface-bg);
    border: 2px solid var(--terminal-green-dim);
    border-radius: 8px;
    color: var(--terminal-green);
    text-decoration: none;
    font-family: var(--font-mono);
    transition: var(--transition-fast);
}

.download-link:hover {
    background-color: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: var(--glow-green);
}

.error-message {
    color: var(--error-red);
    text-align: center;
    padding: var(--spacing-lg);
}

/* Upload hint */
.upload-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-md);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 900px) {
    .process-flow {
        flex-direction: column;
        align-items: center;
    }
    
    .process-arrow {
        transform: rotate(90deg);
        padding: var(--spacing-md);
    }
    
    .process-image {
        max-width: 300px;
    }
}

@media (max-width: 600px) {
    body {
        padding: var(--spacing-md);
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .explanation {
        padding: var(--spacing-lg);
    }
}

.format-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.format-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.toggle-container {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.toggle-container input[type="radio"],
.toggle-container input[type="checkbox"] {
    display: none;
}

.toggle-label {
    padding: 0.5rem 1rem;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.toggle-container input[type="radio"]:checked + .toggle-label,
.toggle-container input[type="checkbox"]:checked + .toggle-label {
    background: var(--terminal-green);
    color: var(--terminal-bg);
    border-color: var(--terminal-green);
    box-shadow: var(--glow-green);
}

.toggle-container:hover .toggle-label {
    border-color: var(--terminal-green);
}

/* ========================================
   FOOT SLIDER
   ======================================== */

.foot-slider-container {
    margin: 1rem auto;
    max-width: 400px;
    text-align: center;
}

.foot-slider-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.foot-slider-value {
    color: var(--terminal-green);
    font-weight: bold;
    font-size: 1.1rem;
    text-shadow: var(--glow-green);
}

.foot-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--surface-bg-light);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.foot-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--terminal-green);
    border: 2px solid var(--terminal-bg);
    box-shadow: var(--glow-green);
    cursor: pointer;
    transition: var(--transition-fast);
}

.foot-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.foot-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--terminal-green);
    border: 2px solid var(--terminal-bg);
    box-shadow: var(--glow-green);
    cursor: pointer;
}

.foot-slider-hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 0.35rem;
}

/* Re-upload notice */
.reupload-notice {
    color: var(--neon-cyan);
    text-align: center;
    font-size: 0.9rem;
    padding: var(--spacing-lg);
    border: 1px dashed var(--neon-cyan);
    border-radius: 6px;
}

.file-loaded {
    text-align: center;
    padding: var(--spacing-lg);
}

.file-loaded-icon {
    font-size: 2rem;
    color: var(--terminal-green);
    text-shadow: var(--glow-green);
    margin-bottom: var(--spacing-sm);
}

.file-loaded-text {
    color: var(--terminal-green);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.file-loaded-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

.create-3d-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--terminal-green);
    border: 2px solid var(--terminal-green-dim);
    border-radius: 8px;
    color: var(--terminal-bg);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.create-3d-btn:hover:not(:disabled) {
    background-color: transparent;
    color: var(--terminal-green);
    box-shadow: var(--glow-green);
}

.create-3d-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* ========================================
   CONTROLS SECTION (between previews)
   ======================================== */

.controls-section {
    display: flex;
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

.controls-inner {
    background-color: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.controls-inner .format-selector {
    margin-bottom: 0;
}

.controls-inner .foot-slider-container {
    margin: 0;
    max-width: 300px;
}

.controls-inner .foot-slider-label {
    margin-bottom: 0.25rem;
}

.controls-inner .create-3d-btn {
    align-self: center;
}