:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: .75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

header h1 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
  flex: 1;
}

.vehicle-selector {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
}

.vehicle-selector select {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: .35rem .6rem;
  font-size: .875rem;
  background: white;
  cursor: pointer;
}

/* ── Layout ── */
.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  grid-template-rows: auto 1fr;
  min-height: calc(100vh - 56px);
}

@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; }
  #map { height: 300px; }
}

/* ── Sidebar ── */
.sidebar {
  background: white;
  border-right: 1px solid var(--gray-200);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  grid-row: 1 / 3;
}

.search-form {
  padding: 1rem;
  border-bottom: 1px solid var(--gray-100);
}

.search-form h2 { font-size: .875rem; font-weight: 600; color: var(--gray-600); margin-bottom: .75rem; text-transform: uppercase; letter-spacing: .05em; }

.field { margin-bottom: .75rem; }
.field label { display: block; font-size: .8125rem; font-weight: 500; color: var(--gray-700); margin-bottom: .25rem; }

.field input, .field select {
  width: 100%;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: .5rem .75rem;
  font-size: .9375rem;
  background: white;
  transition: border-color .15s;
}

.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.speed-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: .25rem;
}

.speed-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

input[type=range] {
  width: 100%;
  accent-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .6rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: .9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, transform .1s;
}

.btn:active { transform: scale(.98); }
.btn-primary { background: var(--primary); color: white; width: 100%; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: .35rem .7rem; font-size: .8125rem; }
.btn-ghost { background: transparent; color: var(--gray-600); }
.btn-ghost:hover { background: var(--gray-100); }
.btn-danger { background: #fee2e2; color: var(--danger); }
.btn-danger:hover { background: #fecaca; }

/* ── Results ── */
.results {
  padding: 1rem;
  flex: 1;
  overflow-y: auto;
}

.route-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow);
  transition: box-shadow .15s;
}

.route-card:hover { box-shadow: var(--shadow-md); }

.route-card.best {
  border-color: var(--success);
}

.route-header {
  padding: .75rem 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
}

.route-card.best .route-header { background: #f0fdf4; }

.badge {
  font-size: .6875rem;
  font-weight: 600;
  padding: .15rem .45rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.badge-best { background: #dcfce7; color: var(--success); }
.badge-estimate { background: #fef9c3; color: #854d0e; font-size: .65rem; }

.route-label { font-weight: 600; font-size: .9375rem; flex: 1; }

.route-cost {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
}

.route-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .5rem;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--gray-100);
}

.stat { text-align: center; }
.stat-value { font-size: 1rem; font-weight: 600; }
.stat-label { font-size: .75rem; color: var(--gray-600); }

.route-detail {
  padding: .75rem 1rem;
  font-size: .8125rem;
  color: var(--gray-600);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.waypoints {
  padding: .5rem 1rem .75rem;
  font-size: .8125rem;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
}

.waypoints strong { color: var(--gray-900); }

.nav-buttons {
  padding: .75rem 1rem;
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .4rem .75rem;
  border-radius: var(--radius);
  font-size: .8125rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-700);
  transition: background .15s;
}

.btn-nav:hover { background: var(--gray-50); }
.btn-nav.waze { border-color: #00d2ff; color: #0088cc; }
.btn-nav.gmaps { border-color: #34a853; color: #1a7430; }
.btn-nav.apple { border-color: #555; color: #333; }

/* ── Narration ── */
.narrator-box {
  margin: 1rem;
  padding: 1rem;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius);
  font-size: .9rem;
  line-height: 1.6;
  color: var(--gray-700);
  min-height: 60px;
}

.narrator-box.loading { opacity: .7; }

/* ── History ── */
.history-section {
  padding: 1rem;
  border-top: 1px solid var(--gray-100);
}

.history-section h3 {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-item {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  padding: .5rem .4rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background .12s;
}

.history-item:hover { background: var(--gray-50); }

.history-item-info { flex: 1; min-width: 0; }
.history-route { font-size: .8125rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta { font-size: .75rem; color: var(--gray-600); }

/* ── Map ── */
#map {
  height: 100%;
  min-height: 400px;
  grid-column: 2;
  grid-row: 1 / 3;
}

/* ── Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal {
  background: white;
  border-radius: 12px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 40px rgba(0,0,0,.2);
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 { font-size: 1rem; font-weight: 600; }
.modal-body { padding: 1.25rem; }
.modal-footer {
  padding: .75rem 1.25rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: .5rem;
}

/* ── Error ── */
.error-box {
  margin: 1rem;
  padding: .75rem 1rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  color: var(--danger);
  font-size: .875rem;
}

/* ── Loader ── */
.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

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

/* ── Settings menu ── */
.settings-menu {
  position: relative;
}

.settings-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  z-index: 150;
  overflow: hidden;
}

.settings-dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  padding: .6rem 1rem;
  font-size: .875rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-700);
}

.settings-dropdown button:hover { background: var(--gray-50); }
.settings-dropdown .divider { height: 1px; background: var(--gray-100); }

/* ── Tooltip ── */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-900);
  color: white;
  font-size: .75rem;
  padding: .35rem .6rem;
  border-radius: 4px;
  white-space: pre-wrap;
  max-width: 240px;
  z-index: 200;
  pointer-events: none;
}

/* ── Autocomplete ── */
.autocomplete-wrapper { position: relative; }
.autocomplete-results {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 130;
  max-height: 200px;
  overflow-y: auto;
}

.autocomplete-item {
  padding: .5rem .75rem;
  font-size: .875rem;
  cursor: pointer;
}

.autocomplete-item:hover { background: var(--gray-50); }