:root {
  --bg-base: #f4f5f7;
  --bg-panel: #ffffff;
  --accent: #55ba08;
  --border: #d1d9e6;
  --border-focus: rgba(85, 186, 8, 0.22);
  --text-main: #111827;
  --text-muted: rgba(17, 24, 39, 0.58);
  --text-disabled: rgba(17, 24, 39, 0.38);
  --text-inverse: #ffffff;
  --text-sub: rgba(17, 24, 39, 0.45);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.06);
  --font-body: 'Poppins', sans-serif;
  --font-header: 'Poppins', sans-serif;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-soft: 0 4px 16px rgba(15, 23, 42, 0.10);
  --shadow-firm: 0 8px 32px rgba(15, 23, 42, 0.18);
}

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

.hidden {
  display: none !important;
}

html {
  zoom: 0.85;
  height: 100%;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 30%, #fdf2f8 60%, #f4f5f7 100%);
  color: var(--text-main);
  height: 100%;
  overflow: hidden;
  line-height: 1.5;
  margin: 0;
}

/* Decorative background */
.bg-layer {
  position: fixed;
  width: 200vw;
  height: 200vh;
  top: -50vh;
  left: -50vw;
  z-index: 0;
  will-change: transform;
  pointer-events: none;
}

@keyframes bg-drift-1 {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(4vw, -3vh) scale(1.03); }
  50%  { transform: translate(-3vw, 5vh) scale(0.97); }
  75%  { transform: translate(2vw, -2vh) scale(1.01); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes bg-drift-2 {
  0%   { transform: translate(0, 0) scale(1); }
  30%  { transform: translate(-5vw, 4vh) scale(1.05); }
  60%  { transform: translate(3vw, -4vh) scale(0.95); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes bg-drift-3 {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(3vw, 6vh); }
  50%  { transform: translate(-5vw, 2vh); }
  80%  { transform: translate(2vw, -3vh); }
  100% { transform: translate(0, 0); }
}
@keyframes bg-drift-4 {
  0%   { transform: translate(0, 0) scale(1); }
  35%  { transform: translate(-2vw, -5vh) scale(1.04); }
  65%  { transform: translate(5vw, 3vh) scale(0.96); }
  100% { transform: translate(0, 0) scale(1); }
}

/* App Layout — fixed sidebar + scrollable main */
.app-layout {
  display: flex;
  height: 100%;
  min-height: 0;
  position: relative;
  z-index: 1;
}

/* Sidebar */
.sidebar {
  width: 420px;
  min-width: 420px;
  height: 100%;
  min-height: 0;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.20);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.10);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 24px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  background: #fff;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
}

.logo-icon svg {
  width: 24px;
  height: 24px;
  stroke: #fff;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

h1 {
  font-family: var(--font-header);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 2px;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 0;
}

/* Main content */
.main-content {
  flex: 1;
  min-width: 0;
  min-height: 0;
  padding: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.preview-column {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.preview-column>.preview-card {
  flex: 1;
  min-height: 0;
  height: 0;
}

.preview-column>.preview-card>.panel-header {
  flex-shrink: 0;
}

.preview-column>.preview-card .view-content-wrapper {
  flex: 1;
  min-height: 0;
}

@media (max-width: 1100px) {
  .sidebar {
    width: 340px;
    min-width: 340px;
  }
}

@media (max-width: 900px) {
  html {
    zoom: 1;
  }

  .app-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    min-width: 0;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }


  .main-content {
    padding: 12px;
  }
}

/* Panels */
.glass-panel {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.glass-panel.preview-card {
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: var(--shadow-soft);
}

#user-auth-panel {
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: var(--shadow-soft);
}

.auth-user-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.auth-avatar-wrap {
  position: relative;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  cursor: pointer;
}

.auth-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 2px solid var(--accent);
  position: absolute;
  inset: 0;
}

.auth-avatar-img {
  position: absolute;
  inset: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  object-fit: cover;
}

.auth-name {
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.auth-actions {
  display: flex;
  gap: 8px;
}

.auth-btn {
  padding: 4px 12px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.auth-btn-signup {
  padding: 4px 12px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
}

.dash-avatar-ph {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-base);
  position: absolute;
  inset: 0;
}

.glass-panel.collapsible {
  gap: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  padding-bottom: 10px;
}

.panel-header h2 {
  flex: 1;
  border: none;
  padding: 0;
  margin: 0;
}

.collapse-icon {
  transition: transform 0.3s ease;
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.glass-panel.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

.panel-body {
  padding-top: 20px;
  overflow: hidden;
  max-height: 800px;
  transition: max-height 0.35s ease, padding-top 0.35s ease;
}

.glass-panel.collapsed .panel-body {
  max-height: 0;
  padding-top: 0;
}

.glass-panel.collapsed .panel-header {
  padding-bottom: 0;
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid #d1d9e6;
  background: white;
  transition: all 0.2s;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
}

h2 {
  font-family: var(--font-header);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
}

h2 i {
  font-size: 14px;
  color: var(--accent);
}

/* Drag & Drop File Upload Zone */
.upload-zone {
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-panel);
  transition: all 0.2s ease-in-out;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(85, 186, 8, 0.06);
}

.upload-zone i {
  font-size: 28px;
  color: var(--accent);
  transition: transform 0.2s;
}

.upload-zone:hover i {
  transform: translateY(-3px);
}

.upload-zone p {
  font-size: 14px;
  font-weight: 500;
}

.upload-zone span {
  font-size: 12px;
  color: var(--text-muted);
}

/* Form Inputs */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-row-double {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-wrapper {
  position: relative;
}

.input-wrapper input[type="number"] {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 32px 10px 12px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all 0.2s;
}

.input-wrapper input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 1px var(--border-focus);
}

.input-wrapper .input-select {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all 0.2s;
  cursor: pointer;
  appearance: auto;
}

.input-wrapper .input-select:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 1px var(--border-focus);
}

.input-wrapper .input-select option {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 10px;
}

.input-wrapper .input-select option:hover {
  background: rgba(85, 186, 8, 0.15);
}

.input-unit {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  width: 25px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  pointer-events: none;
}

/* Sliders and custom elements */
.slider-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.slider-title {
  font-size: 14px;
  font-weight: 500;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.18);
  transition: background 0.1s, transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--accent);
}

.slider-val-badge {
  background: rgba(85, 186, 8, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  min-width: 32px;
  text-align: center;
}

/* Checkbox/Switch */
.switch-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 22px;
}

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

.slider-switch {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border);
  transition: .2s;
  border-radius: 24px;
}

.slider-switch:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  transition: .2s;
  border-radius: 50%;
}

input:checked+.slider-switch {
  background: var(--accent);
}

input:checked+.slider-switch:before {
  transform: translateX(22px);
}

/* Filament list and columns */
.color-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-secondary {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.layer-list-scroll {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 4px;
}

/* Scrollbar Styling */
.layer-list-scroll::-webkit-scrollbar {
  width: 5px;
}

.layer-list-scroll::-webkit-scrollbar-track {
  background: var(--bg-base);
  border-radius: 4px;
}

.layer-list-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.layer-row {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: grab;
}

.layer-row:active {
  cursor: grabbing;
}

.layer-row.dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.layer-row.drag-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--border-focus);
}

.layer-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.layer-badge {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.08);
}

.layer-title {
  font-size: 14px;
  font-weight: 600;
}

.layer-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.layer-swatch {
  width: 86px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  overflow: hidden;
  transition: transform 0.1s, box-shadow 0.1s;
  flex-shrink: 0;
}

.layer-swatch:hover {
  transform: scale(1.15);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.layer-controls .slider-container {
  flex-grow: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.height-slider {
  flex-grow: 1;
}

.slider-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 100px;
  text-align: right;
}

.btn-step {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
}
.btn-step i { font-size: 10px; }

.btn-step:disabled {
  background: var(--bg-base);
  color: var(--text-disabled);
  cursor: not-allowed;
}

.btn-remove-layer:disabled {
  background: var(--bg-base) !important;
  color: var(--text-disabled) !important;
  border-color: var(--border) !important;
}

.btn-remove-layer {
  background: #ef4444;
  color: #ffffff;
  border-color: #ef4444;
  width: 20px;
  height: 20px;
  font-size: 11px;
}

.spacer { flex: 1; }

.td-input-container {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}

.td-input {
  width: 60px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  text-align: center;
  font-family: var(--font-body);
}

.td-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

.filament-picker-container {
  position: relative;
  margin-left: 8px;
}

.filament-picker-btn {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 28px;
  height: 32px;
  cursor: pointer;
  font-size: 10px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

.filament-picker-btn:hover {
  background: var(--bg-base);
}

/* ── Filament Picker Modal ──────────────────────────────────── */
.filament-picker-overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.filament-picker-overlay.hidden {
  display: none;
}

.filament-picker-modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 740px;
  max-width: 90vw;
  max-height: 85vh;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-body);
  position: relative;
}

.filament-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.filament-picker-header h2 {
  margin: 0;
  font-size: 18px;
  font-family: var(--font-body);
}

.filament-picker-body {
  padding: 16px 24px 24px;
  overflow-y: auto;
  flex: 1;
}

.filament-brand-group {
  margin-bottom: 20px;
}

.filament-brand-group:last-child {
  margin-bottom: 0;
}

.filament-brand-header {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.filament-material-header {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
  opacity: 0.7;
}

.filament-brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 8px;
}

.filament-picker-swatch {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  position: relative;
}

.filament-picker-swatch:hover {
  transform: scale(1.3);
  z-index: 2;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.filament-picker-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  padding: 40px 0;
}

/* Right Viewports Panel */
.viewport-tabs {
  display: flex;
  background: rgba(255, 255, 255, 0.20);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 4px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.tab-btn.active {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-main);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.1);
}

.tab-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.view-content-wrapper {
  position: relative;
  flex: 1;
  min-height: 0;
  height: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.viewport-pane {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-in-out;
}

.viewport-pane.active {
  opacity: 1;
  pointer-events: auto;
}

/* Viewport specific styling */
#container-3d {
  width: 100%;
  height: 100%;
}

#model-info-card {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font: 500 12px 'Poppins', sans-serif;
  color: #374151;
  pointer-events: none;
  z-index: 5;
}

.info-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 2px 0;
  white-space: nowrap;
}

.info-card-row+.info-card-row {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.info-card-label {
  color: #9ca3af;
  font-weight: 500;
}

#model-info-card span:last-child {
  font-weight: 600;
  color: #1f2937;
}

#view-cube-container {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 120px;
  height: 120px;
  z-index: 5;
  pointer-events: auto;
}

#view-cube-canvas {
  width: 100%;
  height: 100%;
  cursor: pointer;
}

#view-cube-home {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
  color: #374151;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

#view-cube-home:hover {
  background: rgba(255, 255, 255, 0.95);
}

.plate-selector {
  position: absolute;
  bottom: 12px;
  left: 12px;
  z-index: 5;
  display: flex;
  gap: 4px;
  pointer-events: auto;
}

.plate-btn {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font-body);
  color: #374151;
  transition: background 0.15s;
}

.plate-btn:hover {
  background: rgba(255, 255, 255, 0.95);
}

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

.canvas-2d-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
}

.layer-nav {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 5;
}

.layer-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.1);
  transition: all 0.15s;
}

.layer-nav-btn i {
  font-size: 14px;
}

#canvas-2d {
  max-width: 100%;
  max-height: 100%;
  border-radius: 4px;
  image-rendering: pixelated;
}

/* Flood Fill Toolbar */
.ff-toolbar {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}

.ff-toolbar-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

.ff-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text-main);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(15,23,42,0.08);
  transition: all 0.15s;
  white-space: nowrap;
}

.ff-btn:hover {
  background: var(--bg-base);
  border-color: var(--accent);
}

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

.ff-btn i {
  font-size: 14px;
}

.ff-region-panel {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: 0 4px 18px rgba(15,23,42,0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 210px;
}

.ff-region-panel.hidden { display: none; }

.ff-region-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ff-region-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 180px;
  overflow-y: auto;
}

.ff-region-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.1s;
  cursor: pointer;
}

.ff-region-item:hover {
  background: var(--bg-base);
}

.ff-region-item.selected {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.ff-region-swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1.5px solid rgba(0,0,0,0.15);
  flex-shrink: 0;
}

.ff-region-label {
  font-size: 12px;
  flex: 1;
  color: var(--text-main);
}

.ff-region-del {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-sub);
  padding: 0 2px;
  font-size: 14px;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.1s;
}

.ff-region-del:hover { opacity: 1; color: #ef4444; }

.ff-color-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ff-color-input {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  padding: 2px;
  cursor: pointer;
  background: none;
}

.ff-apply-btn {
  flex: 1;
  padding: 6px 0;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s;
}

.ff-apply-btn:hover { opacity: 0.85; }
.ff-apply-btn:disabled { opacity: 0.4; cursor: not-allowed; }

#canvas-2d.ff-cursor {
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'><circle cx='12' cy='12' r='8' fill='%2355ba08' fill-opacity='0.4' stroke='%2355ba08' stroke-width='2'/><line x1='12' y1='2' x2='12' y2='22' stroke='%2355ba08' stroke-width='2'/><line x1='2' y1='12' x2='22' y2='12' stroke='%2355ba08' stroke-width='2'/></svg>") 12 12, crosshair;
}

/* Export Panel */
.export-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}

.export-card .btn-primary-glow {
  width: 100%;
}

.btn-save { background: #03A9F4; }
.btn-export-obj { background: #00C853; }
.btn-export-stl { background: #FF9800; }

.table-warning {
  text-align: center;
  color: var(--accent);
  padding: 20px;
}

.ff-hint i { font-size: 12px; }

.export-progress {
  display: none;
  flex-direction: column;
  gap: 8px;
}

.export-progress.visible {
  display: flex;
}

.export-progress-status {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-height: 18px;
}

.export-progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--bg-base);
  border: 1px solid var(--border);
}

.export-progress-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 0.18s ease;
}

.export-progress-meta {
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

.btn-primary-glow {
  background: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-inverse);
  padding: 14px 24px;
  font-family: var(--font-header);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: none;
  transition: all 0.2s ease;
}

.btn-primary-glow:active {
  transform: translateY(0);
}

.btn-primary-glow:disabled {
  background: var(--bg-base);
  box-shadow: none;
  color: var(--text-disabled);
  cursor: not-allowed;
  transform: none;
}


.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

th,
td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-base);
}

tr:last-child td {
  border-bottom: none;
}

.color-swatch-sm {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  vertical-align: middle;
  margin-right: 6px;
  box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.08);
}

/* Instruction text */
.tip-box {
  background: rgba(85, 186, 8, 0.06);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.tip-box i {
  font-size: 14px;
  color: var(--accent);
  flex-shrink: 0;
}

.tip-box p {
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
}

/* Preview spinner overlay */
.preview-spinner {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
}

.preview-spinner.hidden {
  display: none;
}

/* Preview empty state */
.preview-empty {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.preview-empty.hidden {
  display: none;
}

.preview-empty .empty-icon {
  width: 48px;
  height: 48px;
  color: var(--border);
  margin-bottom: 4px;
}

.preview-empty .empty-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.preview-empty .empty-hint {
  font-size: 12px;
  color: var(--text-muted);
}

.preview-spinner .spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.preview-spinner .spinner-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

/* Image preview in upload zone */
.upload-preview {
  display: none;
  max-height: 80px;
  max-width: 100%;
  border-radius: 8px;
  object-fit: contain;
}

.upload-zone.has-image .upload-placeholder {
  display: none;
}

.upload-zone.has-image .upload-preview {
  display: block;
}

.remove-bg-link {
  display: none;
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  text-align: center;
  margin-top: 4px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.remove-bg-link:hover {
  opacity: 0.8;
}

.upload-zone.has-image .remove-bg-link {
  display: block;
}

/* ── Auth Modal ──────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay.hidden {
  display: none;
}

.modal-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 380px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-family: var(--font-body);
}

.modal-box h2 {
  margin: 0;
  padding: 0;
  font-size: 20px;
  font-family: var(--font-body);
}

.modal-box .input-wrapper input[type="text"],
.modal-box .input-wrapper input[type="password"] {
  width: 100%;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}

.modal-box .input-wrapper input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--border-focus);
}

.modal-error {
  color: #ef4444;
  font-size: 13px;
  font-weight: 500;
  min-height: 18px;
  font-family: var(--font-body);
}

.modal-toggle {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  font-family: var(--font-body);
}

.modal-toggle a {
  color: var(--accent);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font-body);
}

.modal-toggle a:hover {
  text-decoration: underline;
}

.modal-box .btn-primary-glow {
  width: 100%;
  justify-content: center;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  cursor: pointer;
  width: 28px;
  height: 28px;
  background: var(--bg-base);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 16px;
  font-family: var(--font-body);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Dashboard ─────────────────────────────────────────────────── */
.dashboard-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.2s;
}

.dashboard-overlay.hidden {
  display: none;
}

.dashboard-panel {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 520px;
  max-height: 85vh;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-body);
}

.dash-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 28px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.dash-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-base);
}

.dash-avatar-placeholder {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  flex-shrink: 0;
}

.dash-user-info {
  flex: 1;
  min-width: 0;
}

.dash-username {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.dash-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.dash-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--bg-base);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  transition: background 0.15s;
}

.dash-close:hover {
  background: var(--border);
}

.dash-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.dash-section {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
}

.dash-section:last-child {
  border-bottom: none;
}

.dash-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 14px;
}

.dash-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.dash-row:last-child {
  margin-bottom: 0;
}

.dash-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  min-width: 110px;
}

.dash-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.2s;
  background: #fff;
  box-sizing: border-box;
}

.dash-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--border-focus);
}

.dash-btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  transition: all 0.15s;
}

.dash-btn-primary {
  background: var(--accent);
  color: #fff;
}

.dash-btn-primary:hover {
  filter: brightness(0.92);
}

.dash-btn-secondary {
  background: var(--bg-base);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.dash-btn-secondary:hover {
  background: var(--border);
}

.dash-btn-danger {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.dash-btn-danger:hover {
  background: #fee2e2;
}

.dash-btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.dash-msg {
  font-size: 12px;
  font-weight: 500;
  min-height: 18px;
  margin-top: 6px;
}

.dash-msg-ok {
  color: #16a34a;
}

.dash-msg-err {
  color: #dc2626;
}

.dash-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.dash-stat-card {
  background: var(--bg-base);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
}

.dash-stat-val {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}

.dash-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.dash-filament-empty {
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0;
}

.dash-filament-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dash-filament-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-base);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.dash-filament-swatch {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.dash-filament-name {
  flex: 1;
  font-weight: 500;
  color: var(--text-main);
}

.dash-filament-brand {
  font-size: 11px;
  color: var(--text-muted);
}

.dash-filament-remaining {
  font-size: 12px;
  color: var(--text-muted);
}

.dash-filament-remove {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: #dc2626;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background 0.15s;
}

.dash-filament-remove:hover {
  background: #fee2e2;
}

.dash-add-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  align-items: center;
}

.dash-add-row .dash-input {
  flex: none;
}

.dash-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}

.dash-toggle-label {
  font-size: 13px;
  color: var(--text-main);
}

.dash-select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-body);
  background: #fff;
  outline: none;
  cursor: pointer;
}

.dash-select option {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 8px;
}

.dash-select option:hover {
  background: rgba(85, 186, 8, 0.15);
}

.dash-danger-zone {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 4px;
}

.dash-danger-title {
  font-size: 14px;
  font-weight: 600;
  color: #dc2626;
  margin: 0 0 4px;
}

.dash-danger-desc {
  font-size: 12px;
  color: #991b1b;
  margin: 0 0 12px;
}

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

/* Utility classes */
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-auto { margin-top: auto; }
.panel-footer { padding: 16px; margin-top: auto; }
.btn-row { display: flex; gap: 6px; margin-bottom: 8px; }
.panel-toolbar { display: flex; justify-content: space-between; align-items: center; padding-bottom: 10px; }
.flex-0 { flex: 0 0 auto; }
.flex-1 { flex: 1; min-height: 0; }
.w-40 { width: 40px; }
.w-70 { width: 70px; }
.w-90 { width: 90px; }
.w-120 { width: 120px; }
.ff-hint { font-size: 10px; color: var(--text-sub); margin-top: 2px; }
.ff-hint-sub { font-size: 11px; color: var(--text-sub); padding: 2px 0; }
.dash-color-input { width: 40px; height: 34px; padding: 2px; cursor: pointer; }
.dash-filter-swatch { position: static; font-size: 15px; }
.align-center { align-items: center; }
.pb-0 { padding-bottom: 0; }
.cursor-default { cursor: default; }
.pos-relative { position: relative; }
.icon-md { width: 28px; height: 28px; }
.ml-8 { margin-left: 8px; }
.filament-picker-actions { display: flex; gap: 4px; align-items: center; }
.filament-picker-actions .modal-close { position: static; }

.app-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 30%, #fdf2f8 60%, #f4f5f7 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  transition: opacity 0.3s;
}

.app-loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #e5e7eb;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.app-loader-text {
  font: 500 14px 'Poppins', sans-serif;
  color: #6b7280;
}