:root {
  --primary-navy: #0b1b3d;
  --primary-hover: #142c5f;
  --accent-gold: #c59837;
  --accent-gold-light: #fef3c7;
  --accent-gold-hover: #b2862c;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --danger: #ef4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.app-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 14px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  height: 48px;
  width: auto;
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-navy);
  letter-spacing: -0.01em;
}

.brand-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
}

.badge-ai {
  background-color: var(--accent-gold-light);
  color: #92400e;
  border: 1px solid #fde68a;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
}

/* Layout Grid */
.main-container {
  max-width: 1600px;
  margin: 24px auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 24px;
}

@media (max-width: 1100px) {
  .main-container {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  background: #fafafa;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-navy);
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--primary-navy);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
}

.form-label-hint {
  font-weight: 400;
  color: var(--text-muted);
}

textarea, input[type="text"] {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-main);
  background-color: #ffffff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.45;
}

textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn-accent {
  background-color: var(--accent-gold);
  color: #ffffff;
}

.btn-accent:hover:not(:disabled) {
  background-color: var(--accent-gold-hover);
}

.btn-secondary {
  background-color: #f1f5f9;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover:not(:disabled) {
  background-color: #e2e8f0;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.78rem;
  border-radius: var(--radius-sm);
}

/* Result Sections */
.result-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.result-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-navy);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.result-body {
  font-size: 0.85rem;
  color: var(--text-main);
  white-space: pre-wrap;
  line-height: 1.5;
  background: #ffffff;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid #f1f5f9;
  max-height: 220px;
  overflow-y: auto;
}

/* Right Studio Panel */
.format-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.format-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.format-btn:hover {
  border-color: var(--accent-gold);
}

.format-btn.active {
  border-color: var(--accent-gold);
  background-color: #fffdf5;
  box-shadow: 0 0 0 2px rgba(197, 152, 55, 0.2);
}

.format-icon {
  font-size: 1.1rem;
}

.format-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.format-dims {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: monospace;
}

/* Upload Dropzone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  background: #fafafa;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-gold);
  background: #fffdf5;
}

.dropzone-text {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 600;
}

.dropzone-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Framer Controls */
.framer-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #f8fafc;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-gold);
  cursor: pointer;
}

/* Canvas Viewport */
.canvas-wrapper {
  background: #0f172a;
  border-radius: var(--radius-md);
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  position: relative;
  overflow: hidden;
  user-select: none;
}

#previewCanvas {
  max-width: 100%;
  max-height: 520px;
  border-radius: 4px;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
  cursor: grab;
  touch-action: none;
}

#previewCanvas.dragging {
  cursor: grabbing;
}

.canvas-empty-state {
  position: absolute;
  color: #94a3b8;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.canvas-empty-state svg {
  width: 48px;
  height: 48px;
  stroke: #64748b;
}

.drag-hint-badge {
  position: absolute;
  top: 24px;
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 500;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  pointer-events: none;
  transition: opacity 0.3s;
  box-shadow: var(--shadow-md);
}

/* Spinner */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0f172a;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 100;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s ease-out;
  pointer-events: none;
}

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

/* Tab Container */
.tab-container {
  display: flex;
  background: #f1f5f9;
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

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

.tab-btn.active {
  background: #ffffff;
  color: var(--primary-navy);
  box-shadow: var(--shadow-sm);
}

/* Form Select */
.form-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--text-main);
  font-size: 0.82rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.form-select:focus {
  border-color: var(--border-focus);
}

.form-select-sm {
  padding: 5px 8px;
  font-size: 0.75rem;
}

/* AI Controls Row */
.ai-controls-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

@media (max-width: 600px) {
  .ai-controls-row {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Logo Toggle Group */
.logo-toggle-group {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.toggle-label input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--accent-gold);
  width: 15px;
  height: 15px;
}