/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #f5f7fa;
  color: #1a1a2e;
  line-height: 1.6;
  min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */
header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
}

.header-content h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.tagline {
  margin-top: 0.4rem;
  font-size: 1.05rem;
  color: #a8b2d1;
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* ============================================
   INPUT SECTION
   ============================================ */
.input-section {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: #444;
}

.input-group input,
.input-group select {
  padding: 0.6rem 0.75rem;
  border: 1.5px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-error {
  color: #dc2626;
  font-size: 0.8rem;
  min-height: 1.2rem;
  margin-top: 0.2rem;
}

.city-search-group {
  grid-column: 1 / -1;
  position: relative;
}

/* Search Results Dropdown */
.search-results {
  list-style: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1.5px solid #d1d5db;
  border-top: none;
  border-radius: 0 0 8px 8px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 10;
  display: none;
}

.search-results.open {
  display: block;
}

.search-results li {
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.search-results li:hover {
  background: #eff6ff;
}

/* Selected City Chips */
.selected-cities {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.city-chip {
  background: #e0e7ff;
  color: #3730a3;
  padding: 0.3rem 0.6rem;
  border-radius: 20px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.city-chip img {
  width: 18px;
  height: 13px;
  border-radius: 2px;
}

.chip-remove {
  background: none;
  border: none;
  color: #6366f1;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0 0.15rem;
}

.chip-remove:hover {
  color: #dc2626;
}

/* Compare Button */
#compare-btn {
  grid-column: 1 / -1;
  padding: 0.7rem;
  background: #3b82f6;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

#compare-btn:hover:not(:disabled) {
  background: #2563eb;
}

#compare-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ============================================
   STATUS MESSAGES
   ============================================ */
.status-message {
  text-align: center;
  padding: 0.8rem;
  border-radius: 8px;
  margin-top: 1rem;
  font-size: 0.9rem;
  display: none;
}

.status-message.error {
  display: block;
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.status-message.info {
  display: block;
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.status-message.warning {
  display: block;
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

/* Retry button inside status */
.retry-btn {
  margin-top: 0.5rem;
  padding: 0.35rem 0.8rem;
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
}

.retry-btn:hover {
  background: #b91c1c;
}

/* ============================================
   LOADER
   ============================================ */
.loader {
  text-align: center;
  padding: 2.5rem 1rem;
  display: none;
}

.loader.active {
  display: block;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3.5px solid #e5e7eb;
  border-top-color: #3b82f6;
  border-radius: 50%;
  margin: 0 auto 0.75rem;
  animation: spin 0.7s linear infinite;
}

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

/* ============================================
   DASHBOARD CONTROLS
   ============================================ */
.dashboard-controls {
  display: none;
  margin-top: 1.5rem;
}

.dashboard-controls.visible {
  display: block;
}

.control-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  background: #fff;
  padding: 1rem 1.2rem;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  align-items: flex-end;
}

.control-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 150px;
}

.control-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #666;
  margin-bottom: 0.3rem;
}

.control-group select {
  padding: 0.45rem 0.6rem;
  border: 1.5px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.88rem;
}

.toggle-group {
  display: flex;
  border: 1.5px solid #d1d5db;
  border-radius: 6px;
  overflow: hidden;
}

.toggle-btn {
  flex: 1;
  padding: 0.45rem 0.7rem;
  border: none;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.toggle-btn.active {
  background: #3b82f6;
  color: #fff;
}

/* ============================================
   DASHBOARD — CITY CARDS
   ============================================ */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 1.2rem;
}

.city-card {
  background: #fff;
  border-radius: 12px;
  padding: 1.2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.2s;
}

.city-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.city-card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #f0f0f0;
}

.city-card-header img {
  width: 30px;
  height: 20px;
  border-radius: 3px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.city-card-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.city-card-header .remove-city {
  margin-left: auto;
  background: none;
  border: none;
  color: #9ca3af;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0 0.2rem;
}

.city-card-header .remove-city:hover {
  color: #dc2626;
}

/* Purchasing Power Gauge */
.power-gauge {
  text-align: center;
  margin-bottom: 1rem;
}

.power-value {
  font-size: 1.8rem;
  font-weight: 700;
}

.power-label {
  font-size: 0.75rem;
  color: #666;
  margin-top: 0.1rem;
}

.power-bar-track {
  width: 100%;
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  margin-top: 0.5rem;
  overflow: hidden;
}

.power-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* City Score */
.city-score {
  text-align: center;
  font-size: 0.8rem;
  color: #6b7280;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #f0f0f0;
}

/* Category Rows */
.category-row {
  margin-bottom: 0.8rem;
}

.category-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #555;
  margin-bottom: 0.25rem;
  display: flex;
  justify-content: space-between;
}

.category-cost {
  font-weight: 700;
  color: #1a1a2e;
}

.cost-bar-track {
  width: 100%;
  height: 6px;
  background: #f3f4f6;
  border-radius: 3px;
  overflow: hidden;
}

.cost-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}

.bar-green { background: #22c55e; }
.bar-yellow { background: #eab308; }
.bar-red { background: #ef4444; }

.power-green { background: #22c55e; }
.power-yellow { background: #eab308; }
.power-red { background: #ef4444; }

.text-green { color: #16a34a; }
.text-yellow { color: #ca8a04; }
.text-red { color: #dc2626; }

/* Category detail items */
.category-items {
  margin-top: 0.3rem;
  padding-left: 0.2rem;
}

.category-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #6b7280;
  padding: 0.15rem 0;
}

/* Card error state */
.city-card-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  color: #b91c1c;
  font-size: 0.85rem;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  color: #9ca3af;
  border-top: 1px solid #e5e7eb;
}

footer a {
  color: #6366f1;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
  .input-section {
    grid-template-columns: 1fr;
  }

  .control-row {
    flex-direction: column;
  }

  .dashboard {
    grid-template-columns: 1fr;
  }

  header {
    padding: 1.5rem 1rem;
  }

  .header-content h1 {
    font-size: 1.5rem;
  }
}