/* ===== CSS Custom Properties for Theming ===== */
:root {
  --transition-speed: 200ms;
  /* Primary palette */
  --primary-50: #eef2ff;
  --primary-100: #e0e7ff;
  --primary-200: #c7d2fe;
  --primary-300: #a5b4fc;
  --primary-400: #818cf8;
  --primary-500: #6366f1;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --primary-800: #3730a3;
  --primary-900: #312e81;
  /* Surface palette */
  --surface-50: #f8fafc;
  --surface-100: #f1f5f9;
  --surface-200: #e2e8f0;
  --surface-300: #cbd5e1;
  --surface-400: #94a3b8;
  --surface-500: #64748b;
  --surface-600: #475569;
  --surface-700: #334155;
  --surface-800: #1e293b;
  --surface-900: #0f172a;
  --surface-950: #020617;
}

html, body {
  height: 100%;
  overflow: hidden;
  scrollbar-gutter: stable;
}

/* ===== Beta Branding ===== */
.beta-badge {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0.125rem 0.45rem;
  border: 1px solid #fcd34d;
  border-radius: 9999px;
  background: #fffbeb;
  color: #92400e;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  text-transform: uppercase;
}
[data-theme="dark"] .beta-badge {
  background: rgba(245, 158, 11, 0.12);
  border-color: #92400e;
  color: #fcd34d;
}
@media (max-width: 639px) {
  header { padding-left: 0.75rem !important; padding-right: 0.75rem !important; }
  .header-brand { gap: 0.5rem !important; }
  .header-brand h1 { font-size: 1.125rem; }
  .header-brand svg { width: 1.5rem; height: 1.5rem; }
  .header-actions { gap: 0.25rem !important; }
  .header-actions button:not(#btn-theme) { padding-left: 0.5rem; padding-right: 0.5rem; }
  .header-actions svg { margin-right: 0; }
  .header-action-label, .header-actions > a { display: none; }
}

/* ===== Wizard Step Navigation ===== */
.wizard-step-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 0.5rem;
  text-align: left;
  font-size: 0.875rem;
  transition: background-color 200ms, color 200ms;
  color: var(--surface-500);
  background: transparent;
  border: none;
  cursor: pointer;
}
.wizard-step-btn:hover {
  background-color: var(--surface-100);
}
[data-theme="dark"] .wizard-step-btn:hover {
  background-color: var(--surface-800);
}
.wizard-step-btn.active {
  background-color: var(--primary-50);
  color: var(--primary-700);
  font-weight: 500;
}
[data-theme="dark"] .wizard-step-btn.active {
  background-color: rgba(49, 46, 129, 0.3);
  color: var(--primary-300);
}
.wizard-step-btn.completed {
  color: #16a34a;
}
[data-theme="dark"] .wizard-step-btn.completed {
  color: #4ade80;
}
.step-num {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  background-color: var(--surface-200);
  color: var(--surface-500);
}
[data-theme="dark"] .step-num {
  background-color: var(--surface-700);
  color: var(--surface-400);
}
.wizard-step-btn.active .step-num {
  background-color: var(--primary-500);
  color: #fff;
}
.wizard-step-btn.completed .step-num {
  background-color: #22c55e;
  color: #fff;
}

/* ===== Mobile Tabs ===== */
.mobile-tab {
  padding: 0.625rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 200ms, border-color 200ms;
  color: var(--surface-400);
  border-bottom: 2px solid transparent;
  background: transparent;
  cursor: pointer;
}
.mobile-tab.active {
  color: var(--primary-600);
  border-bottom-color: var(--primary-500);
}
[data-theme="dark"] .mobile-tab.active {
  color: var(--primary-400);
}

/* ===== Wizard Content ===== */
.wizard-step {
  height: 100%;
}

/* ===== Input Fields ===== */
.input-field {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  transition: border-color 200ms, box-shadow 200ms;
  background-color: var(--surface-50);
  border: 1px solid var(--surface-200);
  outline: none;
  color: inherit;
}
.input-field:focus {
  border-color: var(--primary-400);
  box-shadow: 0 0 0 2px var(--primary-100);
}
[data-theme="dark"] .input-field {
  background-color: var(--surface-800);
  border-color: var(--surface-700);
  color: var(--surface-100);
}
[data-theme="dark"] .input-field:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 2px rgba(49, 46, 129, 0.5);
}
.input-field:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== Labels ===== */
.label-text {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--surface-600);
}
[data-theme="dark"] .label-text {
  color: var(--surface-300);
}

/* ===== Tooltip Trigger ===== */
.tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  border-radius: 9999px;
  font-size: 10px;
  font-weight: 700;
  cursor: help;
  margin-left: 0.25rem;
  background-color: var(--surface-200);
  color: var(--surface-500);
  vertical-align: middle;
  transition: background-color 150ms, color 150ms;
  border: none;
}
.tooltip-trigger:hover {
  background-color: var(--primary-100);
  color: var(--primary-600);
}
[data-theme="dark"] .tooltip-trigger {
  background-color: var(--surface-700);
  color: var(--surface-400);
}
[data-theme="dark"] .tooltip-trigger:hover {
  background-color: rgba(49, 46, 129, 0.5);
  color: var(--primary-300);
}
.tooltip-trigger.inline-scale {
  width: 0.875rem;
  height: 0.875rem;
  font-size: 9px;
}

/* ===== Tooltip Popover ===== */
.tooltip-popover {
  position: fixed;
  max-width: 20rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  line-height: 1.625;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  z-index: 2000;
  pointer-events: none;
  background-color: var(--surface-900);
  color: var(--surface-100);
}
[data-theme="dark"] .tooltip-popover {
  background-color: var(--surface-100);
  color: var(--surface-900);
}

/* ===== Buttons ===== */
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-next {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 200ms;
  background-color: var(--primary-500);
  color: #fff;
  border: none;
  cursor: pointer;
}
.btn-next:hover,
.btn-primary:hover {
  background-color: var(--primary-600);
}
.btn-primary {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 200ms;
  background-color: var(--primary-500);
  color: #fff;
  border: none;
  cursor: pointer;
}
/* Intro page feature badges */
.feature-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  background-color: #eef2ff;
  color: #4338ca;
  border: 1px solid #c7d2fe;
}
[data-theme="dark"] .feature-pill {
  background-color: rgba(67,56,202,0.15);
  color: #a5b4fc;
  border-color: rgba(99,102,241,0.3);
}
.btn-prev {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 200ms;
  background-color: var(--surface-100);
  color: var(--surface-600);
  border: none;
  cursor: pointer;
}
.btn-prev:hover {
  background-color: var(--surface-200);
}
[data-theme="dark"] .btn-prev {
  background-color: var(--surface-800);
  color: var(--surface-300);
}
[data-theme="dark"] .btn-prev:hover {
  background-color: var(--surface-700);
}
.btn-copy, .btn-download {
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background-color 200ms, color 200ms;
  background-color: rgba(255,255,255,0.8);
  color: var(--surface-500);
  border: 1px solid var(--surface-200);
  cursor: pointer;
}
.btn-copy:hover, .btn-download:hover {
  background-color: #fff;
  color: var(--surface-700);
}
[data-theme="dark"] .btn-copy, [data-theme="dark"] .btn-download {
  background-color: rgba(51,65,85,0.8);
  color: var(--surface-400);
  border-color: var(--surface-600);
}
[data-theme="dark"] .btn-copy:hover, [data-theme="dark"] .btn-download:hover {
  background-color: var(--surface-700);
  color: var(--surface-200);
}
.btn-copy.copied {
  background-color: #f0fdf4;
  border-color: #86efac;
  color: #16a34a;
}
[data-theme="dark"] .btn-copy.copied {
  background-color: rgba(20, 83, 45, 0.3);
  border-color: #15803d;
  color: #4ade80;
}

/* ===== Cards ===== */
.card-selectable {
  padding: 1rem;
  border-radius: 0.75rem;
  border: 2px solid var(--surface-200);
  cursor: pointer;
  transition: border-color 200ms, background-color 200ms;
}
.card-selectable:hover {
  border-color: var(--primary-300);
}
[data-theme="dark"] .card-selectable {
  border-color: var(--surface-700);
}
[data-theme="dark"] .card-selectable:hover {
  border-color: var(--primary-600);
}
.physics-card {
  padding: 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--surface-200);
  background-color: #fff;
}
[data-theme="dark"] .physics-card {
  border-color: var(--surface-700);
  background-color: var(--surface-900);
}

/* ===== Domain Cards ===== */
.domain-card {
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--surface-200);
  cursor: pointer;
  transition: border-color 200ms, background-color 200ms;
}
.domain-card:hover {
  border-color: var(--primary-300);
}
[data-theme="dark"] .domain-card {
  border-color: var(--surface-700);
}
[data-theme="dark"] .domain-card:hover {
  border-color: var(--primary-600);
}
.domain-card.active {
  border-color: var(--primary-400);
  background-color: rgba(238, 242, 255, 0.5);
}
[data-theme="dark"] .domain-card.active {
  background-color: rgba(49, 46, 129, 0.2);
  border-color: var(--primary-600);
}
.domain-badge {
  padding: 0.125rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  display: inline-block;
}

/* ===== Code Output ===== */
.code-output {
  padding: 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.75rem;
  line-height: 1.625;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  white-space: pre;
  background-color: var(--surface-900);
  color: #4ade80;
  max-height: 600px;
  overflow-y: auto;
}

/* ===== Namelist/Script/Advanced Tabs ===== */
.namelist-tab, .script-tab, .adv-tab {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 200ms, background-color 200ms, border-color 200ms;
  border: 1px solid transparent;
  border-radius: 0.5rem 0.5rem 0 0;
  margin-bottom: -1px;
  color: var(--surface-400);
  background: transparent;
  cursor: pointer;
}
.namelist-tab:hover, .script-tab:hover, .adv-tab:hover {
  color: var(--surface-600);
  background-color: var(--surface-100);
}
[data-theme="dark"] .namelist-tab:hover, [data-theme="dark"] .script-tab:hover, [data-theme="dark"] .adv-tab:hover {
  color: var(--surface-300);
  background-color: var(--surface-800);
}
.namelist-tab.active, .script-tab.active, .adv-tab.active {
  color: var(--primary-600);
  background-color: var(--primary-50);
  border-color: var(--surface-200) var(--surface-200) transparent;
  font-weight: 600;
}
[data-theme="dark"] .namelist-tab.active, [data-theme="dark"] .script-tab.active, [data-theme="dark"] .adv-tab.active {
  color: var(--primary-400);
  background-color: rgba(49, 46, 129, 0.3);
  border-color: var(--surface-700) var(--surface-700) transparent;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-content {
  background-color: #fff;
  border-radius: 1rem;
  padding: 1.5rem;
  width: 100%;
  max-width: 28rem;
  margin: 0 1rem;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
  border: 1px solid var(--surface-200);
}
[data-theme="dark"] .modal-content {
  background-color: var(--surface-900);
  border-color: var(--surface-700);
}

/* ===== Leaflet Overrides ===== */
/* Native SVG focus outlines surround the bounding box, producing a misleading
   rectangle. Keyboard focus is indicated along the actual projected edge. */
.wrf-domain-outline:focus {
  outline: none;
}
.wrf-domain-outline:focus-visible {
  stroke-width: 5;
}
.wrf-domain-handle {
  background: white;
  border: 2px solid var(--primary-600);
  border-radius: 3px;
  box-shadow: 0 1px 5px rgba(0,0,0,0.3);
  cursor: nwse-resize;
}
.wrf-move-handle {
  border-radius: 50%;
  cursor: move;
  color: var(--primary-700);
  font-size: 13px;
  line-height: 12px;
  text-align: center;
}
.wrf-edit-control a {
  font-size: 22px;
  color: var(--surface-700);
}
.wrf-edit-control a.wrf-edit-active { color: var(--primary-600); background: var(--primary-50); }
.wrf-edit-control a.wrf-edit-disabled { color: var(--surface-300); cursor: default; }
[data-theme="dark"] .wrf-edit-control a { background: var(--surface-800); color: var(--surface-200); }
[data-theme="dark"] .wrf-edit-control a.wrf-edit-active { color: var(--primary-300); }
.leaflet-container {
  background-color: var(--surface-200);
  font-family: inherit;
}
[data-theme="dark"] .leaflet-container {
  background-color: var(--surface-800);
}
[data-theme="dark"] .leaflet-tile-pane {
  filter: brightness(0.7) contrast(1.1) saturate(0.8);
}
[data-theme="dark"] .leaflet-control-zoom a {
  background-color: var(--surface-800);
  color: var(--surface-200);
  border-color: var(--surface-700);
}
[data-theme="dark"] .leaflet-control-zoom a:hover {
  background-color: var(--surface-700);
}
.leaflet-draw-toolbar a {
  background-image: url('https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/images/spritesheet.png');
  background-image: linear-gradient(transparent, transparent), url('https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/images/spritesheet.svg');
  background-repeat: no-repeat;
  background-size: 300px 30px;
  background-clip: padding-box;
}
.leaflet-retina .leaflet-draw-toolbar a {
  background-image: url('https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/images/spritesheet-2x.png');
  background-image: linear-gradient(transparent, transparent), url('https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/images/spritesheet.svg');
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background-color: var(--surface-300);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background-color: var(--surface-400);
}
[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background-color: var(--surface-700);
}
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background-color: var(--surface-600);
}

/* ===== Data Source Cards ===== */
.data-source-card {
  cursor: pointer;
}

/* ===== Toast (dark mode) ===== */
[data-theme="dark"] #wrflow-toast {
  background: var(--surface-800) !important;
  color: var(--surface-200) !important;
  border-color: var(--surface-600) !important;
}

/* ===== Domain validation states ===== */
.domain-valid {
  stroke: #22c55e !important;
  stroke-dasharray: none !important;
}
.domain-invalid {
  stroke: #ef4444 !important;
  stroke-dasharray: 8,4 !important;
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.wizard-step:not(.hidden) {
  animation: fadeIn 0.2s ease-out;
}