/* ============================================================
   TripLogger design system — no framework, vanilla CSS.
   Minimalist: neutral surfaces, hairline borders, one accent,
   generous whitespace, subtle depth and motion.
   ============================================================ */

:root {
  --bg: #f7f7f8;
  --surface: #ffffff;
  --border: #e5e5e8;
  --border-strong: #d4d4d8;
  --text: #18181b;
  --text-2: #52525b;
  --muted: #a1a1aa;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef2ff;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --success: #059669;
  --success-soft: #ecfdf5;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(24, 24, 27, 0.04), 0 4px 16px rgba(24, 24, 27, 0.04);
  --shadow-lg: 0 4px 12px rgba(24, 24, 27, 0.08), 0 16px 48px rgba(24, 24, 27, 0.12);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9375rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { letter-spacing: -0.02em; margin: 0; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.page-title { font-size: 1.375rem; font-weight: 650; }

.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-form { grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.span-12 { grid-column: span 12; }
.span-6 { grid-column: span 6; }
.span-4 { grid-column: span 4; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 56px;
}

.nav-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-brand:hover { text-decoration: none; }

.nav-logo {
  width: 26px;
  height: 26px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
}

.nav-links a {
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; background: var(--bg); }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); }

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.55rem;
  cursor: pointer;
  color: var(--text);
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-pad { padding: 1.5rem; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.125rem 1.25rem;
}

.stat .value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.stat .label {
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  white-space: nowrap;
}
.btn:hover { background: var(--bg); text-decoration: none; }
.btn:active { transform: scale(0.98); }

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

.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #047857; border-color: #047857; }

.btn-danger { background: transparent; border-color: transparent; color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }

.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-sm { font-size: 0.8125rem; padding: 0.3rem 0.7rem; }
.btn-block { width: 100%; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }

table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background 0.1s; }
.table tbody tr:hover { background: #fafafa; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .row-deleted { background: var(--danger-soft); }
.table .row-deleted:hover { background: #fee2e2; }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 3rem 1rem !important;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
  vertical-align: middle;
}
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-neutral { background: var(--bg); color: var(--text-2); border: 1px solid var(--border); }
.badge-accent { background: var(--accent-soft); color: var(--accent); }

/* ---------- Forms ---------- */
.label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 550;
  color: var(--text-2);
  margin-bottom: 0.35rem;
}

.label .opt { color: var(--muted); font-weight: 400; }

.input,
input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="search"], input[type="email"], select, textarea {
  width: 100%;
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.input:focus,
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.14);
}

.checkbox {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-2);
}

.help { font-size: 0.78rem; color: var(--muted); margin-top: 0.3rem; }

.errorlist {
  list-style: none;
  margin: 0.3rem 0 0;
  padding: 0;
  font-size: 0.8rem;
  color: var(--danger);
}

.form-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.input-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  align-items: center;
}
.input-row .ac-wrapper { flex: 1; }

/* ---------- Alerts ---------- */
.alert {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}
.alert-success { background: var(--success-soft); color: var(--success); border-color: #a7f3d0; }
.alert-danger, .alert-error { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.alert-info { background: var(--accent-soft); color: var(--accent); border-color: #c7d2fe; }

.alert-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.6;
  padding: 0 0.2rem;
}
.alert-close:hover { opacity: 1; }

/* ---------- Autocomplete ---------- */
.ac-wrapper { position: relative; }

.ac-panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 1050;
  max-height: 280px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 0.25rem;
}

.ac-item {
  padding: 0.5rem 0.65rem;
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.ac-item.active { background: var(--accent-soft); }

.ac-item mark {
  background: transparent;
  color: var(--accent);
  font-weight: 650;
  padding: 0;
}

.ac-sub { font-size: 0.76rem; color: var(--muted); }

.ac-empty {
  padding: 0.65rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.geo-results {
  margin-top: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  max-height: 220px;
  overflow-y: auto;
  padding: 0.25rem;
}
.geo-results[hidden] { display: none; }

/* ---------- Maps ---------- */
.tl-map {
  height: 340px;
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  z-index: 1;
}

/* ---------- Modal (native <dialog>) ---------- */
dialog.modal {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0;
  width: min(420px, calc(100vw - 2rem));
}

dialog.modal::backdrop {
  background: rgba(24, 24, 27, 0.45);
  backdrop-filter: blur(2px);
}

.modal-body { padding: 1.5rem; }
.modal-title { font-size: 1.05rem; font-weight: 650; margin-bottom: 1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.6rem; margin-top: 1.5rem; }

/* ---------- Detail list ---------- */
.detail-list { display: grid; grid-template-columns: 40% 1fr; row-gap: 0.65rem; margin: 0; font-size: 0.9rem; }
.detail-list dt { color: var(--muted); font-weight: 500; }
.detail-list dd { margin: 0; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 380px;
  padding: 2.25rem;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  justify-content: center;
  margin-bottom: 0.4rem;
}

.login-sub {
  text-align: center;
  color: var(--muted);
  font-size: 0.83rem;
  margin: 0 0 1.75rem;
}

/* ---------- Dashboard groups & column picker ---------- */
.trip-group { margin-bottom: 1.75rem; }

.group-date {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.col-picker { position: relative; }

.col-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 200;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 180px;
}
.col-menu[hidden] { display: none; }

/* ---------- Analytics ---------- */
.chart-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
.chart-card h3 { font-size: 0.9rem; font-weight: 600; color: var(--text-2); margin-bottom: 0.75rem; }
.chart-box { position: relative; height: 260px; }
.rank-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }

@media (max-width: 860px) {
  .chart-grid, .rank-grid { grid-template-columns: 1fr; }
}

/* ---------- Search row ---------- */
.search-form { display: flex; gap: 0.5rem; }
.search-form input { width: 260px; }

/* ---------- Filters & pagination ---------- */
.filter-bar {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.25rem;
}

.filter-actions { display: flex; gap: 0.5rem; }

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.pager-info { font-size: 0.8125rem; color: var(--muted); }
.pager-links { display: flex; align-items: center; gap: 0.75rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .span-6, .span-4 { grid-column: span 12; }

  .nav-toggle { display: block; }
  .nav-inner { flex-wrap: wrap; height: auto; padding-top: 0.6rem; padding-bottom: 0.6rem; }
  .nav-links, .nav-user {
    display: none;
    flex: 0 0 100%;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.5rem 0;
  }
  .nav.open .nav-links, .nav.open .nav-user { display: flex; }
  .nav-user { flex-direction: row; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 0.75rem; }

  .search-form { width: 100%; }
  .search-form input { width: 100%; }
  .filter-bar { grid-template-columns: 1fr 1fr; }
  .filter-bar > div:first-child, .filter-actions { grid-column: span 2; }
  .detail-list { grid-template-columns: 1fr; row-gap: 0.15rem; }
  .detail-list dt { margin-top: 0.6rem; }
  .tl-map { height: 260px; }
  .container { padding-top: 1.25rem; }
}