/* ==========================================================================
   POLYGONIZE 3D — CYBER-GROWTH DESIGN SYSTEM & STYLESHEET
   Artes do Sul Masterpiece Studio Edition
   ========================================================================== */

:root {
  --bg-primary: #050508;
  --bg-surface: #0a0b12;
  --bg-panel: rgba(14, 16, 26, 0.85);
  --bg-card: rgba(22, 25, 42, 0.65);
  --bg-card-hover: rgba(32, 36, 60, 0.85);
  --accent-cyan: #00e5ff;
  --accent-magenta: #ff007f;
  --accent-orange: #ff6b35;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 229, 255, 0.45);
  --border-glow: 0 0 15px rgba(0, 229, 255, 0.25);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --glass-blur: blur(16px);
  --font-display: 'Bricolage Grotesque', sans-serif;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

.font-mono { font-family: var(--font-mono); }
.font-display { font-family: var(--font-display); }

#app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  background: radial-gradient(circle at 10% 20%, rgba(0, 229, 255, 0.05) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 40%),
              var(--bg-primary);
}

/* ==========================================================================
   APP HEADER
   ========================================================================== */
.app-header {
  height: 60px;
  background: rgba(10, 11, 18, 0.9);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 50;
  flex-shrink: 0;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand-logo-gem {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(139, 92, 246, 0.3));
  border: 1px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
  transition: var(--transition-normal);
}

.brand-link:hover .brand-logo-gem {
  transform: rotate(45deg);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.6);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-3d {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
  color: #000;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Preset Buttons in Header */
.header-presets {
  display: flex;
  align-items: center;
  gap: 6px;
}

.preset-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-right: 4px;
}

.btn-preset {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-preset:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-preset.active {
  background: rgba(0, 229, 255, 0.12);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
}

/* Header Right */
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.network-badge {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-glass);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.status-dot.offline {
  background: var(--accent-orange);
  box-shadow: 0 0 8px var(--accent-orange);
}

.stats-badge {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-glass);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--accent-green);
}

.btn-pwa-install {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--accent-cyan);
  color: #fff;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-normal);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
  animation: pwaPulse 2.5s infinite ease-in-out;
}

@keyframes pwaPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0, 229, 255, 0.2); }
  50% { box-shadow: 0 0 20px rgba(0, 229, 255, 0.5); }
}

.btn-pwa-install:hover {
  background: var(--accent-cyan);
  color: #050508;
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
  transform: translateY(-1px);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* ==========================================================================
   WORKSPACE LAYOUT
   ========================================================================== */
.workspace-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Controls Panel */
.controls-panel {
  width: 380px;
  background: var(--bg-panel);
  backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 20;
  flex-shrink: 0;
}

/* Tabs */
.panel-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-glass);
  padding: 6px;
  gap: 4px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 8px 4px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

/* Tab Contents */
.tab-content {
  display: none;
  padding: 16px;
  flex-direction: column;
  gap: 16px;
}

.tab-content.active {
  display: flex;
}

/* Control Groups */
.control-group {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.group-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

/* Dropzone */
.dropzone {
  border: 2px dashed rgba(0, 229, 255, 0.35);
  background: rgba(0, 229, 255, 0.02);
  border-radius: 10px;
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: var(--transition-normal);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.drop-icon {
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.drop-text {
  font-size: 0.9rem;
  color: #fff;
}

.drop-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.drop-paste-hint {
  font-size: 0.7rem;
  color: var(--accent-orange);
  margin-top: 8px;
}

.drop-paste-hint span {
  background: rgba(255, 107, 53, 0.15);
  border: 1px solid rgba(255, 107, 53, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Sample Showcase Grid */
.sample-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.sample-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.sample-card:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.sample-card.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  color: var(--accent-cyan);
}

.sample-thumb {
  width: 100%;
  height: 48px;
  border-radius: 6px;
  background-size: cover;
  background-position: center;
}

.sample-thumb-hero { background-image: url('assets/img/hero.webp'); background-size: cover; border: 1px solid rgba(0, 229, 255, 0.4); }
.sample-thumb-cyber { background: linear-gradient(135deg, #ff007f, #00e5ff); }
.sample-thumb-mountains { background: linear-gradient(135deg, #0f2027, #203a43, #2c5364); }
.sample-thumb-lion { background: linear-gradient(135deg, #f12711, #f5af19); }
.sample-thumb-arch { background: linear-gradient(135deg, #2b5876, #4e4376); }
.sample-thumb-sunset { background: linear-gradient(135deg, #fa709a, #fee140); }
.sample-thumb-skull { background: linear-gradient(135deg, #11998e, #38ef7d); }

/* Custom Sliders */
.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.value-badge {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 1px 6px;
  border-radius: 4px;
}

.custom-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: transform 0.1s;
}

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

.slider-sublabels {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--text-dim);
}

/* Radio Chip Groups */
.radio-chip-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chip-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.chip-label:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.chip-label input[type="radio"] {
  accent-color: var(--accent-cyan);
}

.chip-label:has(input[type="radio"]:checked) {
  background: rgba(0, 229, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Custom Select */
.custom-select {
  width: 100%;
  background: rgba(10, 12, 20, 0.9);
  border: 1px solid var(--border-glass);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--accent-cyan);
}

/* Switches / Toggles */
.toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider-toggle {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.15);
  transition: 0.3s;
  border-radius: 20px;
}

.slider-toggle:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

input:checked + .slider-toggle {
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

input:checked + .slider-toggle:before {
  transform: translateX(18px);
  background-color: #050508;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, #00e5ff, #00a3ff);
  color: #050508;
  border: none;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-normal);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border: 1px solid var(--border-glass);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 10px 14px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 0 15px rgba(37, 211, 102, 0.3);
  transition: var(--transition-normal);
}

.btn-whatsapp:hover {
  box-shadow: 0 0 25px rgba(37, 211, 102, 0.5);
  transform: translateY(-1px);
}

.w-full { width: 100%; }
.mt-2 { margin-top: 8px; }
.btn-stack { display: flex; flex-direction: column; gap: 8px; }

/* Export Resolution Grid */
.export-res-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.btn-res {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-res.active {
  background: rgba(0, 229, 255, 0.12);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Artes do Sul Creative Share Box */
.as-share-box {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), rgba(0, 229, 255, 0.05));
  border-color: rgba(255, 107, 53, 0.3);
}

.badge-growth {
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--accent-orange);
  letter-spacing: 0.05em;
}

.as-share-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  margin-top: 2px;
}

.as-share-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* Color Picker */
.color-picker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.custom-color-input {
  -webkit-appearance: none;
  border: 1px solid var(--border-glass);
  border-radius: 6px;
  width: 32px;
  height: 24px;
  background: transparent;
  cursor: pointer;
}

.custom-color-input::-webkit-color-swatch-wrapper { padding: 0; }
.custom-color-input::-webkit-color-swatch { border: none; border-radius: 4px; }

/* ==========================================================================
   VIEWPORT AREA
   ========================================================================== */
.viewport-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #000;
}

#three-canvas-holder {
  width: 100%;
  height: 100%;
}

#three-canvas-holder canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* Floating Controls */
.viewport-controls-top {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.view-pill-btn {
  background: rgba(10, 12, 20, 0.85);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.view-pill-btn:hover {
  background: rgba(20, 24, 40, 0.95);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.viewport-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 12, 20, 0.85);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.7rem;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
}

/* Split Preview Box */
.split-preview-box {
  position: absolute;
  bottom: 20px;
  left: 20px;
  width: 220px;
  height: 160px;
  background: rgba(10, 12, 20, 0.95);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  z-index: 15;
  display: flex;
  flex-direction: column;
}

.split-badge {
  background: rgba(0, 0, 0, 0.8);
  font-size: 0.65rem;
  color: var(--accent-orange);
  padding: 4px 8px;
  border-bottom: 1px solid var(--border-glass);
}

#original-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Loader */
.viewport-loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 30;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.viewport-loader.active {
  opacity: 1;
  pointer-events: all;
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(0, 229, 255, 0.15);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-text {
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

/* ==========================================================================
   MODAL & TOAST
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: var(--glass-blur);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
}

.modal-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
}

.modal-body {
  padding: 16px;
  display: flex;
  justify-content: center;
}

#webcam-video {
  width: 100%;
  border-radius: 8px;
  background: #000;
}

.modal-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: flex-end;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background: rgba(14, 16, 26, 0.95);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.8rem;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 200;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.app-footer {
  height: 32px;
  background: rgba(5, 5, 8, 0.95);
  border-top: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  flex-shrink: 0;
  z-index: 50;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1400px;
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.footer-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-meta {
  font-size: 0.68rem;
  color: var(--text-dim);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 900px) {
  .workspace-layout {
    flex-direction: column-reverse;
  }
  .controls-panel {
    width: 100%;
    height: 48vh;
    border-right: none;
    border-top: 1px solid var(--border-glass);
  }
  .viewport-area {
    height: 52vh;
  }
  .header-presets {
    display: none;
  }
}