/* ==========================================================================
   RMA AI Front Elevation Designer - Architectural Software CSS
   ========================================================================== */

:root {
  /* Color Palette - Architectural Clean Dark Green Accent */
  --bg-app: #f4f5f7;
  --bg-panel: #ffffff;
  --bg-panel-header: #f8f9fa;
  --bg-toolbar: #f0f2f5;
  --bg-hover: #e8ecef;
  --bg-active: #d8e2dc;

  --color-primary: #1b4332;       /* Dark Green */
  --color-primary-light: #2d6a4f; /* Medium Forest Green */
  --color-primary-dark: #081c15;
  --color-primary-subtle: #e8f5e9;

  --color-accent: #40916c;
  --color-text-main: #212529;
  --color-text-muted: #6c757d;
  --color-text-light: #f8f9fa;

  --border-color: #dee2e6;
  --border-color-dark: #ced4da;

  --color-danger: #c1121f;
  --color-success: #2b9348;
  --color-warning: #d97706;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --header-height: 52px;
  --toolbar-width: 72px;
  --panel-right-width: 380px;
  --status-bar-height: 28px;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-family);
  font-size: 13px;
  color: var(--color-text-main);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
}

/* App Container Layout */
.app-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}

/* Header Navbar */
.app-header {
  height: var(--header-height);
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  user-select: none;
  z-index: 100;
}

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

.logo-mark {
  background-color: var(--color-primary-light);
  color: #ffffff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 1px;
  padding: 4px 8px;
  border-radius: 4px;
}

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

.brand-title {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.brand-subtitle {
  font-size: 10px;
  color: #a3b18a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.project-title-input {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 13px;
  width: 220px;
  transition: all 0.2s;
}

.project-title-input:focus {
  background: rgba(255, 255, 255, 0.2);
  border-color: #a3b18a;
  outline: none;
}

.project-status-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.15);
  color: #d8e2dc;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.unit-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: 8px;
  font-size: 11px;
  color: #d8e2dc;
}

.input-select-sm {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
}

.input-select-sm option {
  background: var(--color-primary-dark);
  color: #ffffff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

.btn-lg {
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 700;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background-color: var(--color-primary-light);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.btn-icon-only {
  padding: 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-icon-only:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Main Workspace */
.workspace {
  display: flex;
  flex: 1;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
  position: relative;
}

/* CAD Left Toolbar */
.cad-toolbar {
  width: var(--toolbar-width);
  background-color: var(--bg-toolbar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 6px 4px;
  gap: 8px;
  overflow-y: auto;
  user-select: none;
  z-index: 10;
}

.toolbar-section-title {
  font-size: 8px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-align: center;
  letter-spacing: 0.5px;
  margin-top: 4px;
  margin-bottom: 2px;
}

.tool-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px 2px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-main);
  cursor: pointer;
  transition: all 0.1s ease;
  font-size: 9px;
  font-weight: 500;
  gap: 2px;
}

.tool-btn .icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.tool-btn:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-color);
}

.tool-btn.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  border-color: var(--color-accent);
  font-weight: 700;
}

/* Main Viewport */
.main-viewport {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  position: relative;
  overflow: hidden;
}

.viewport-options-bar {
  height: 36px;
  background-color: var(--bg-panel-header);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  user-select: none;
}

.view-mode-tabs {
  display: flex;
  gap: 2px;
}

.view-tab {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
}

.view-tab.active {
  background-color: #ffffff;
  color: var(--color-primary);
  border-color: var(--border-color);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.snapping-controls, .history-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-toggle {
  padding: 3px 8px;
  font-size: 11px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  background: #ffffff;
  color: var(--color-text-muted);
  cursor: pointer;
}

.btn-toggle.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  border-color: var(--color-accent);
  font-weight: 600;
}

.btn-icon {
  padding: 3px 6px;
  font-size: 11px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  background: #ffffff;
  color: var(--color-text-main);
  cursor: pointer;
}

.btn-icon:hover {
  background-color: var(--bg-hover);
}

.btn-danger-sm {
  color: var(--color-danger);
  border-color: #f8d7da;
}

.btn-danger-sm:hover {
  background-color: #f8d7da;
}

/* Canvas Viewport */
.canvas-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: #ffffff;
  cursor: crosshair;
}

#elevationCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* AutoCAD Floating Dynamic Input Box Overlay */
.dynamic-input-overlay {
  position: absolute;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.95);
  border: 1.5px solid var(--color-primary-light);
  border-radius: 4px;
  padding: 4px 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  pointer-events: auto;
}

.dyn-input-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dyn-input-group label {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 10px;
}

.dyn-input-field {
  width: 90px;
  padding: 2px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border-color-dark);
  border-radius: 3px;
  background-color: #ffffff;
  outline: none;
}

.dyn-input-field:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 2px rgba(43, 147, 72, 0.2);
}

/* AutoCAD Command Line UI */
.cad-command-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: #111827;
  color: #f9fafb;
  border-top: 1px solid #374151;
  font-family: var(--font-mono);
  font-size: 11px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.2);
}

.cmd-history-log {
  max-height: 48px;
  overflow-y: auto;
  padding: 4px 8px;
  background-color: #030712;
  color: #9ca3af;
  font-size: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cmd-log-line {
  line-height: 1.3;
}

.cmd-input-row {
  display: flex;
  align-items: center;
  padding: 4px 8px;
  gap: 6px;
  background-color: #1f2937;
}

.cmd-prompt-label {
  color: #10b981;
  font-weight: 700;
  white-space: nowrap;
}

.cmd-input-field {
  flex: 1;
  background: transparent;
  border: none;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
}

.cmd-input-field::placeholder {
  color: #6b7280;
}

.three-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #1a1a1a;
  z-index: 5;
}

.three-container.hidden {
  display: none;
}

.three-controls-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  padding: 8px 12px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10;
  backdrop-filter: blur(4px);
}

.three-title {
  font-weight: 700;
  font-size: 12px;
}

.three-preset-btns {
  display: flex;
  gap: 4px;
}

.btn-xs {
  padding: 2px 6px;
  font-size: 10px;
}

/* Viewport Status Bar */
.viewport-status-bar {
  height: var(--status-bar-height);
  background-color: var(--bg-panel-header);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 20px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  user-select: none;
}

.status-item {
  display: flex;
  gap: 6px;
}

.status-label {
  font-weight: 600;
  color: var(--color-text-main);
}

/* Right Panel */
.right-panel {
  width: var(--panel-right-width);
  background-color: var(--bg-panel);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  user-select: none;
}

.panel-accordion {
  display: flex;
  flex-direction: column;
}

.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 12px;
  background-color: var(--bg-panel-header);
  cursor: pointer;
  color: var(--color-primary-dark);
}

.accordion-header .icon {
  width: 16px;
  height: 16px;
  fill: var(--color-primary);
}

.accordion-content {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-desc {
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-main);
}

.form-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.input-with-unit {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color-dark);
  border-radius: 4px;
  background-color: #ffffff;
  overflow: hidden;
}

.input-with-unit input {
  flex: 1;
  border: none;
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
}

.unit-label {
  padding: 5px 8px;
  background-color: var(--bg-app);
  border-left: 1px solid var(--border-color);
  font-size: 10px;
  font-weight: 700;
  color: var(--color-text-muted);
}

.input-select, .input-text, .input-textarea {
  width: 100%;
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid var(--border-color-dark);
  border-radius: 4px;
  background-color: #ffffff;
  outline: none;
  font-family: inherit;
}

.input-select:focus, .input-text:focus, .input-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(45, 106, 79, 0.2);
}

.input-textarea {
  resize: vertical;
  line-height: 1.4;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  font-size: 11px;
}

.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: normal;
  cursor: pointer;
}

.highlight-box {
  background-color: var(--color-primary-subtle);
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  padding: 10px;
}

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

.badge {
  display: inline-block;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
}

.badge-success {
  background-color: var(--color-success);
  color: #ffffff;
}

.hint-text {
  font-size: 10px;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* File Upload Area */
.file-upload-area {
  position: relative;
  border: 2px dashed var(--border-color-dark);
  border-radius: 6px;
  padding: 16px;
  text-align: center;
  background-color: var(--bg-app);
  cursor: pointer;
  transition: all 0.2s;
}

.file-upload-area:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

.file-upload-area input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.icon-lg {
  width: 24px;
  height: 24px;
  fill: var(--color-primary);
}

.file-hint {
  font-size: 10px;
  color: var(--color-text-muted);
}

/* Reference Image Grid */
.ref-image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 8px;
}

.ref-image-card {
  position: relative;
  aspect-ratio: 1;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.ref-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ref-image-card .btn-remove-img {
  position: absolute;
  top: 2px;
  right: 2px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Render Gallery & Options */
.render-status-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background-color: var(--color-primary-subtle);
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.design-gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.empty-gallery-msg, .empty-inspector-msg {
  grid-column: 1 / -1;
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 16px 8px;
  font-style: italic;
  background-color: var(--bg-app);
  border-radius: 4px;
}

.design-card {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  background: #ffffff;
  display: flex;
  flex-direction: column;
}

.design-card-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background-color: #000;
  overflow: hidden;
}

.design-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.design-card-tag {
  position: absolute;
  top: 4px;
  left: 4px;
  background-color: rgba(27, 67, 50, 0.85);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
}

.design-card-actions {
  display: flex;
  padding: 4px;
  gap: 4px;
  background-color: var(--bg-panel-header);
  border-top: 1px solid var(--border-color);
}

.api-config-notice {
  grid-column: 1 / -1;
  padding: 12px;
  background-color: var(--color-primary-subtle);
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  color: var(--color-primary-dark);
  font-size: 11px;
  line-height: 1.4;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

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

.modal-card {
  background-color: #ffffff;
  width: 520px;
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-card-sm {
  width: 380px;
}

.modal-card-lg {
  width: 900px;
}

.modal-header {
  padding: 12px 16px;
  background-color: var(--bg-panel-header);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.btn-close {
  background: none;
  border: none;
  font-size: 20px;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-footer {
  padding: 12px 16px;
  background-color: var(--bg-panel-header);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.export-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.export-type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-app);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.export-type-card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

.export-icon {
  font-size: 24px;
  margin-bottom: 6px;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Utility Helpers */
.hidden { display: none !important; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.strong { font-weight: 700; }
.btn-link { background: none; border: none; color: var(--color-primary-light); cursor: pointer; text-decoration: underline; font-size: 12px; }
.btn-link-sm { background: none; border: none; color: var(--color-primary-light); cursor: pointer; text-decoration: underline; font-size: 11px; }
.alert { padding: 8px 12px; border-radius: 4px; font-size: 12px; }
.alert-error { background-color: #f8d7da; color: var(--color-danger); border: 1px solid #f5c6cb; }

/* Responsive adjustments */
@media (max-width: 1024px) {
  :root {
    --panel-right-width: 320px;
  }
}

@media (max-width: 768px) {
  .workspace {
    flex-direction: column;
  }
  .cad-toolbar {
    width: 100%;
    height: 50px;
    flex-direction: row;
    overflow-x: auto;
  }
  .right-panel {
    width: 100%;
    height: 300px;
  }
}