/* Design Tokens (CSS Custom Properties) */
:root {
  --bg-app: #0b0f19;
  --bg-surface: #131b2e;
  --bg-surface-elevated: #1e2942;
  --border-color: #2b3859;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0284c7;

  /* WCAG Score Badges */
  --badge-green-bg: #064e3b;
  --badge-green-text: #6ee7b7;
  --badge-green-border: #059669;

  --badge-amber-bg: #78350f;
  --badge-amber-text: #fde68a;
  --badge-amber-border: #d97706;

  --badge-red-bg: #7f1d1d;
  --badge-red-text: #fca5a5;
  --badge-red-border: #dc2626;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --focus-ring: #38bdf8;
}

/* HIGH CONTRAST MODE (body.hc) */
body.hc {
  --bg-app: #000000;
  --bg-surface: #000000;
  --bg-surface-elevated: #111111;
  --border-color: #ffff00;
  --text-primary: #ffff00;
  --text-secondary: #ffffff;
  --accent: #ffff00;
  --accent-hover: #ffff66;
  --focus-ring: #ffff00;

  --badge-green-bg: #000000;
  --badge-green-text: #00ff66;
  --badge-green-border: #00ff66;

  --badge-amber-bg: #000000;
  --badge-amber-text: #ffff00;
  --badge-amber-border: #ffff00;

  --badge-red-bg: #000000;
  --badge-red-text: #ff3333;
  --badge-red-border: #ff3333;
}

body.hc * {
  border-color: #ffff00 !important;
}

/* Base Reset & Typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

/* Header */
.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
}

.header-inner {
  max-width: 1024px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  font-size: 2rem;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

/* Main Layout */
.main-wrapper {
  max-width: 1024px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Cards & Planner */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-select {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.75rem;
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
}

/* Accessibility Needs Fieldset */
.needs-fieldset {
  border: none;
  margin-bottom: 1.5rem;
}

.needs-legend {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}

.chip-item input[type="checkbox"] {
  width: 17px;
  height: 17px;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent);
  color: #000;
}

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

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-block {
  width: 100%;
  padding: 0.85rem;
  font-size: 1rem;
}

/* Results Section */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.results-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.results-count {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.results-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Route Card */
.route-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.route-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.route-mode-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.route-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.score-badge.badge-green {
  background-color: var(--badge-green-bg);
  color: var(--badge-green-text);
  border-color: var(--badge-green-border);
}

.score-badge.badge-amber {
  background-color: var(--badge-amber-bg);
  color: var(--badge-amber-text);
  border-color: var(--badge-amber-border);
}

.score-badge.badge-red {
  background-color: var(--badge-red-bg);
  color: var(--badge-red-text);
  border-color: var(--badge-red-border);
}

.tags-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.tag.tag-yes {
  color: #6ee7b7;
  border-color: #059669;
}

.tag.tag-no {
  color: #fca5a5;
  border-color: #dc2626;
}

.route-notes {
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding-left: 0.65rem;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.card-actions .btn {
  flex: 1;
  min-width: 140px;
}

/* Empty State */
.empty-state {
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-secondary);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 1rem;
}

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

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.9rem;
}

.facility-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}

.facility-table th,
.facility-table td {
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  text-align: left;
  font-size: 0.8rem;
}

.facility-table th {
  background-color: var(--bg-surface-elevated);
}

/* Footer */
.app-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 1.25rem;
  text-align: center;
}

.footer-inner {
  max-width: 1024px;
  margin: 0 auto;
  font-size: 0.85rem;
}

.footer-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}