:root {
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --danger: #dc2626;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #eef2ff 0%, var(--bg) 220px, var(--bg) 100%);
  color: var(--text);
}

.hidden {
  display: none !important;
}

.muted {
  color: var(--muted);
}

.auth-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(420px, 100%);
  background: var(--card);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.auth-card input {
  width: 100%;
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 16px;
}

.auth-card button,
.ghost-btn,
.export-btn {
  border: none;
  cursor: pointer;
  font: inherit;
}

.auth-card button {
  width: 100%;
  margin-top: 12px;
  padding: 14px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.auth-error {
  margin-top: 12px;
  color: var(--danger);
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.kicker {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 36px);
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.export-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
}

.export-quick-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-right: 4px;
}

.export-panel {
  border: 1px solid #99f6e4;
  background: linear-gradient(180deg, #f0fdfa 0%, #ffffff 100%);
}

.export-actions-main {
  margin-top: 4px;
}

.export-btn-sm {
  padding: 8px 12px;
  font-size: 13px;
}

.filter-field input[type='date'] {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font: inherit;
}

.download-status {
  margin: 12px 0 0;
  font-size: 14px;
}

.download-status-error {
  color: var(--danger);
}

.export-btn-lg {
  padding: 14px 18px;
  font-size: 15px;
  min-width: 140px;
  justify-content: center;
  border: none;
  cursor: pointer;
  font: inherit;
}

.ghost-btn {
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.filter-panel {
  margin-bottom: 18px;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.filter-field select {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font: inherit;
}

.filter-summary {
  margin: 14px 0 0;
  font-size: 14px;
}

.primary-filter-btn {
  background: #ecfdf5;
  border-color: #99f6e4;
  color: #0f766e;
  font-weight: 600;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.summary-card {
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.summary-card strong {
  display: block;
  font-size: 28px;
  margin-bottom: 6px;
}

.panel-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  margin-bottom: 18px;
}

.panel {
  background: var(--card);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}

.panel-head h2 {
  margin: 0 0 6px;
  font-size: 22px;
}

.panel-head-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.fleet-radar {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}

.fleet-radar svg {
  width: min(100%, 420px);
  height: auto;
}

.fleet-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.legend-item {
  padding: 10px 12px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid var(--line);
  font-size: 13px;
}

.legend-item strong {
  display: block;
  margin-bottom: 4px;
}

.ob-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.ob-bar-track {
  height: 10px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}

.ob-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #14b8a6, #0f766e);
  border-radius: 999px;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.export-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #115e59;
  text-decoration: none;
  font-weight: 600;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--muted);
  font-weight: 600;
}

.footer {
  text-align: center;
  padding-top: 8px;
  font-size: 13px;
}

@media (max-width: 900px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }

  .panel-head-row {
    flex-direction: column;
  }

  .export-quick {
    width: 100%;
    justify-content: flex-start;
  }

  .topbar {
    flex-direction: column;
  }

  .topbar-actions {
    width: 100%;
    justify-content: flex-start;
  }
}