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

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #334155;
  --border: #475569;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --danger: #ef4444;
  --success: #22c55e;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --bar-h: 68px;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  line-height: 1.5;
}

.hidden {
  display: none !important;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, #1e3a8a 0%, var(--bg) 100%);
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--border);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.app-header h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.subtitle {
  margin: 2px 0 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.search-wrap input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}

.search-wrap input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.stats {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.location-list {
  padding: 12px 12px calc(var(--bar-h) + var(--safe-bottom) + 16px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.location-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
}

.location-card:hover,
.location-card:focus-visible {
  border-color: var(--primary);
  outline: none;
}

.card-building {
  font-size: 0.7rem;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-location {
  margin: 4px 0 8px;
  font-size: 0.95rem;
  font-weight: 600;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.progress-bar {
  height: 6px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #60a5fa);
  border-radius: 999px;
}

.progress-label {
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-bottom: var(--safe-bottom);
  z-index: 200;
}

.bar-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 10px 4px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
}

.bar-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.bar-icon {
  font-size: 1.25rem;
  line-height: 1;
}

.modal {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  background: var(--surface);
  color: var(--text);
  width: min(560px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  box-shadow: var(--shadow);
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.65);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.icon-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
}

.modal-body {
  padding: 16px;
  overflow-y: auto;
  max-height: calc(100dvh - 180px);
}

.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.result-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  overflow: hidden;
}

.result-item summary {
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  background: var(--surface-2);
}

.carrier-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 10px;
}

.carrier-field label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.carrier-field input {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
}

.modal-footer {
  display: flex;
  gap: 8px;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--border);
}

.btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

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

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

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.toast {
  position: fixed;
  bottom: calc(var(--bar-h) + var(--safe-bottom) + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-2);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 300;
  max-width: calc(100vw - 32px);
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.fatal-error {
  margin: 16px;
  padding: 16px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  color: #fecaca;
}

.backup-status {
  margin-top: 8px;
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.backup-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.backup-actions {
  margin-bottom: 12px;
}

.backup-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.backup-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--bg);
}

.backup-time {
  font-size: 0.85rem;
  font-weight: 600;
}

.backup-name {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin: 4px 0 8px;
  word-break: break-all;
}

.backup-btns {
  display: flex;
  gap: 12px;
}

.btn-link {
  border: none;
  background: none;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}

.backup-empty {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 12px 0;
}

@media (max-width: 430px) {
  .carrier-fields {
    grid-template-columns: 1fr;
  }
}