/* === GENERATOR PAGE STYLES === */

.nav-active { color: var(--color-text) !important; font-weight: 700 !important; }

/* Page Layout */
.gen-main { min-height: 100vh; }
.gen-hero {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}
.gen-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}
.gen-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 640px;
}

.gen-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  padding-block: var(--space-8);
  align-items: start;
}

@media (max-width: 1024px) {
  .gen-layout { grid-template-columns: 1fr; }
}

/* Form Panel */
.gen-form-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.gen-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.gen-section-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.gen-step-num {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}
.gen-section-header h2 {
  font-size: var(--text-lg);
  font-weight: 700;
}
.gen-hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: auto;
}

/* Form Fields */
.gen-field {
  margin-bottom: var(--space-4);
}
.gen-field:last-child { margin-bottom: 0; }
.gen-field label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.field-hint {
  font-weight: 400;
  color: var(--color-text-faint);
}
.pass-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.7rem;
  margin-right: var(--space-1);
  vertical-align: middle;
}

select, textarea {
  width: 100%;
  padding: var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  font-family: var(--font-body);
}
select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}
select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b6862' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
textarea { resize: vertical; min-height: 60px; }

.gen-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 640px) {
  .gen-row { grid-template-columns: 1fr; }
}

/* Sub-menus animation */
.sub-menus {
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Lane Selector */
.lane-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 640px) {
  .lane-selector { grid-template-columns: 1fr; }
}
.lane-option {
  cursor: pointer;
  display: block;
}
.lane-option input { display: none; }
.lane-option-content {
  padding: var(--space-4);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive);
}
.lane-option:hover .lane-option-content {
  border-color: var(--color-text-muted);
}
.lane-option input:checked + .lane-option-content {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}
.lane-badge-sm {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}
.lane-a-bg { background: var(--color-primary-highlight); color: var(--color-primary); }
.lane-b-bg { background: var(--color-accent-light); color: var(--color-accent); }
.lane-c-bg { color: var(--color-lane-c); background: color-mix(in srgb, var(--color-lane-c) 12%, transparent); }
.lane-option-content strong {
  display: block;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}
.lane-option-content p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0 auto;
}

/* Generate Button */
.gen-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font-display);
  cursor: pointer;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}
.gen-button:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}
.gen-button:active { transform: translateY(0); }

/* Output Panel */
.gen-output-panel {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}
@media (max-width: 1024px) {
  .gen-output-panel { position: static; max-height: none; }
}

.output-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--color-text-faint);
}
.output-empty-icon { margin-bottom: var(--space-4); opacity: 0.4; }
.output-empty h3 { font-size: var(--text-lg); color: var(--color-text-muted); margin-bottom: var(--space-2); }
.output-empty p { font-size: var(--text-sm); max-width: 300px; }

.output-content { padding: var(--space-4); }

/* Tabs */
.output-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 3px;
  overflow-x: auto;
}
.output-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.output-tab:hover { color: var(--color-text); }
.output-tab.active {
  background: var(--color-surface-2);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}
.output-tab-content { display: none; }
.output-tab-content.active { display: block; }

/* Output sections */
.output-section {
  margin-bottom: var(--space-4);
}
.output-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.output-section-head h3 {
  font-size: var(--text-sm);
  font-weight: 700;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.copy-btn:hover { background: color-mix(in srgb, var(--color-primary) 20%, transparent); }
.copy-btn.copied { color: var(--color-text-inverse); background: var(--color-primary); }

.output-code {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-text);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 500px;
  overflow-y: auto;
}

.output-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.meta-tag {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
}

.api-notes {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-4);
}
.api-notes h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-3);
}
.api-notes ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.api-notes li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}
.api-notes li::before { content: '→'; position: absolute; left: 0; color: var(--color-primary); }
.api-notes code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8em;
  background: var(--color-surface-offset);
  padding: 1px 5px;
  border-radius: 3px;
}