:root {
  color-scheme: dark;
  --ink: #e7efed;
  --muted: #a9bab6;
  --panel: #132b31;
  --panel-raised: #214149;
  --line: #3e5d61;
  --control-line: #607b7d;
  --aqua: #7adcc4;
  --sky: #b7cdd3;
  --danger: #ffb0a7;
  --bg: #0c1c21;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-padding-top: 24px; scrollbar-gutter: stable; }
body { margin: 0; min-width: 320px; min-height: 100vh; color: var(--ink); background: var(--bg); }
button, input, select { font: inherit; }
button { color: inherit; }
button, select { cursor: pointer; }
input { caret-color: var(--aqua); }
h1, h2, h3, p { margin-top: 0; }
::selection { color: var(--bg); background: var(--aqua); }
:focus-visible { outline: 2px solid var(--aqua); outline-offset: 3px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 10px max(24px, calc((100% - 1280px) / 2));
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-size: 1.125rem; font-weight: 600; text-decoration: none; }
.brand > span:last-child span { color: var(--aqua); }
.brand-mark { display: flex; align-items: center; }
.brand-mark svg { width: 28px; fill: none; stroke: var(--aqua); stroke-width: 1.7; stroke-linecap: round; }
.account-actions { display: flex; align-items: center; gap: 8px; }
.account-actions .button-secondary { border-color: transparent; }
.balance { display: grid; padding: 4px 12px; border: 0; color: var(--ink); background: transparent; text-align: right; }
.balance-label { color: var(--muted); font-size: 0.75rem; }
.balance strong { font-size: 0.875rem; font-weight: 600; }
.account-logout { min-height: 44px; padding: 0 8px; border: 0; color: var(--muted); background: transparent; font-size: 0.875rem; }
.account-logout:hover { color: var(--ink); }

main { width: min(1280px, calc(100% - 48px)); margin: 0 auto; padding: 32px 0 56px; }
.intro { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
h1 { margin-bottom: 0; font-size: 2rem; font-weight: 650; line-height: 1.25; letter-spacing: -0.02em; text-wrap: balance; }
.intro p { max-width: 65ch; margin-bottom: 0; color: var(--muted); font-size: 0.9375rem; }
.intro .process-summary { margin-top: 8px; }
.intro-status { flex-shrink: 0; max-width: 320px; text-align: right; }
.catalog-status { margin-bottom: 4px; color: var(--aqua); font-size: 0.875rem; font-variant-numeric: tabular-nums; }
.intro .last-update { font-size: 0.75rem; }
.sample-download { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-bottom: 24px; }
.sample-download p { max-width: 65ch; margin: 0; color: var(--muted); font-size: 0.8125rem; }

.workspace { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(320px, 1fr); gap: 24px; align-items: start; }
.catalog-panel, .request-panel { padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.catalog-panel { min-width: 0; }
.request-panel { position: sticky; top: 24px; background: #1a3339; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.panel-header > div { display: flex; align-items: center; gap: 10px; }
.panel-header h2, .profile-panel h2 { margin: 0; font-size: 1.25rem; font-weight: 650; }
.task-step { display: grid; flex-shrink: 0; width: 26px; height: 26px; place-items: center; border: 1px solid var(--aqua); border-radius: 50%; color: var(--aqua); font-size: 0.8125rem; font-weight: 600; }
.section-meta { color: var(--muted); font-size: 0.75rem; font-variant-numeric: tabular-nums; }
.result-count { padding: 4px 8px; border-radius: 4px; color: var(--muted); background: var(--panel-raised); font-size: 0.75rem; font-variant-numeric: tabular-nums; }
.selection-controls { display: grid; gap: 16px; }
.selection-filters { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 16px; }
.catalog-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 16px 0; }
.mode-switch { display: flex; gap: 4px; padding: 3px; border: 1px solid var(--control-line); border-radius: 6px; background: var(--bg); }
.mode-button { min-width: 90px; min-height: 40px; padding: 0 12px; border: 0; border-radius: 3px; color: var(--muted); background: transparent; font-size: 0.875rem; font-weight: 500; }
.mode-button:hover { color: var(--ink); }
.mode-button.is-active { color: var(--aqua); background: var(--panel-raised); }
.selection-hint { margin: 8px 0 0; color: var(--muted); font-size: 0.8125rem; }
.selection-toolbar { display: flex; align-items: center; gap: 8px; }
.selection-toolbar span { color: var(--muted); font-size: 0.75rem; }
.selection-toolbar .button { flex-shrink: 0; }
.text-filters { display: grid; grid-template-columns: minmax(0, 1fr) 180px; gap: 16px; align-items: end; margin-bottom: 16px; }
.filters label { display: block; }
label > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 0.8125rem; }
select, input[type="date"], input[type="text"], input[type="number"], .search-wrap input, .auth-form input {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--control-line);
  border-radius: 5px;
  color: var(--ink);
  background: var(--bg);
  font-size: 0.875rem;
}
input::placeholder { color: var(--muted); opacity: 1; }
select:focus, input:focus { border-color: var(--aqua); }
.date-input { position: relative; }
.date-input .date-text { padding-right: 44px; font-variant-numeric: tabular-nums; }
.date-input-icon { position: absolute; top: 50%; right: 14px; width: 16px; transform: translateY(-50%); fill: none; stroke: var(--muted); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; pointer-events: none; }
.date-input .date-picker { position: absolute; top: 0; right: 0; width: 44px; height: 44px; min-height: 44px; padding: 0; border: 0; opacity: 0; cursor: pointer; }
.date-input:focus-within .date-text { border-color: var(--aqua); }
.search-wrap { position: relative; }
.search-wrap svg { position: absolute; left: 12px; top: 50%; width: 18px; transform: translateY(-50%); fill: none; stroke: var(--muted); stroke-width: 1.7; stroke-linecap: round; }
.search-wrap input { padding: 0 40px; }
.search-wrap kbd { position: absolute; top: 50%; right: 12px; transform: translateY(-50%); color: var(--muted); font-size: 0.75rem; }

.station-list { max-height: 400px; overflow: auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); scrollbar-color: var(--line) var(--bg); }
.station-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; padding: 14px 12px; border-bottom: 1px solid var(--line); }
.station-row:last-child { border-bottom: 0; }
.station-row:hover, .station-row.is-selected { background: var(--panel-raised); }
.station-name { margin-bottom: 4px; font-size: 0.875rem; font-weight: 600; overflow-wrap: anywhere; }
.station-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; color: var(--muted); font-size: 0.75rem; font-variant-numeric: tabular-nums; }
.station-add { min-width: 76px; min-height: 44px; padding: 0 10px; border: 1px solid var(--control-line); border-radius: 5px; color: var(--ink); background: transparent; font-size: 0.8125rem; font-weight: 500; }
.station-add:hover, .station-row.is-selected .station-add { border-color: var(--aqua); color: var(--aqua); }
.station-add:disabled { cursor: not-allowed; color: var(--muted); }
.station-add:disabled:hover { border-color: var(--line); color: var(--muted); }
.empty-list { padding: 32px 16px; color: var(--muted); font-size: 0.875rem; text-align: center; }

.map-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.map-actions .button[aria-pressed="true"] { border-color: var(--aqua); color: var(--aqua); background: var(--panel-raised); }
.map-canvas { z-index: 1; width: 100%; height: 480px; overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: var(--bg); }
.map-canvas.is-drawing, .map-canvas.is-drawing * { cursor: crosshair !important; }
.map-footer { display: grid; gap: 6px; padding-top: 12px; }
.map-footer p { margin: 0; color: var(--muted); font-size: 0.75rem; }
.map-unavailable { display: grid; height: 100%; place-items: center; padding: 24px; color: var(--muted); text-align: center; }
.leaflet-container { font-family: inherit; }
.leaflet-control-zoom a { color: var(--ink); background: var(--panel) !important; border-color: var(--line) !important; }
.leaflet-bar { border-color: var(--line) !important; }
.leaflet-tooltip { padding: 8px 12px; border-color: var(--line); border-radius: 5px; color: var(--ink); background: var(--panel-raised); box-shadow: none; font-size: 0.75rem; }
.leaflet-tooltip span { color: var(--muted); }
.leaflet-tooltip-top::before { border-top-color: var(--panel-raised); }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { color: var(--ink); background: var(--panel-raised); }
.leaflet-popup-content { min-width: 190px; margin: 16px; }
.map-popup strong { display: block; margin-bottom: 6px; font-size: 0.875rem; }
.map-popup span { display: block; margin-bottom: 4px; color: var(--muted); font-size: 0.75rem; }
.map-popup button { width: 100%; min-height: 44px; margin-top: 8px; border: 1px solid var(--aqua); border-radius: 5px; color: var(--aqua); background: transparent; font-size: 0.8125rem; }
.map-popup button:hover { color: var(--bg); background: var(--aqua); }
.map-popup button:disabled { cursor: not-allowed; border-color: var(--line); color: var(--muted); }
.map-popup button:disabled:hover { color: var(--muted); background: transparent; }

.calendar-panel { margin-bottom: 24px; }
.date-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 8px; }
.date-text[aria-invalid="true"] { border-color: var(--danger); }
.date-presets { display: flex; gap: 8px; }
.date-presets button { min-width: 60px; min-height: 44px; padding: 0 10px; border: 1px solid var(--control-line); border-radius: 5px; color: var(--muted); background: var(--bg); font-size: 0.8125rem; }
.date-presets button:hover { border-color: var(--aqua); color: var(--aqua); }
.selection-block { padding-top: 24px; border-top: 1px solid var(--line); }
.selected-stations { display: grid; max-height: 196px; overflow: auto; overscroll-behavior: contain; scrollbar-color: var(--line) transparent; }
.selected-empty { padding: 16px 0; color: var(--muted); font-size: 0.8125rem; }
.selected-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.selected-item strong { display: block; font-size: 0.8125rem; font-weight: 600; overflow-wrap: anywhere; }
.selected-item span { display: block; color: var(--muted); font-size: 0.75rem; }
.selected-item.no-data .station-data-status { color: var(--danger); }
.no-data-summary { padding: 12px 0; color: var(--danger); font-size: 0.75rem; }
.remove-button, .icon-button { display: grid; width: 44px; height: 44px; padding: 12px; place-items: center; border: 0; border-radius: 5px; color: var(--muted); background: transparent; }
.remove-button svg, .icon-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.remove-button:hover { color: var(--danger); background: var(--panel-raised); }
.icon-button:hover { color: var(--ink); background: var(--panel-raised); }

.cost-card { margin: 20px 0 16px; }
.cost-card > div { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.cost-card span { display: block; color: var(--muted); font-size: 0.8125rem; }
.cost-card strong { font-size: 1.25rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.cost-card strong span { display: inline; color: inherit; font-size: inherit; }
.cost-card p { margin: 8px 0 0; color: var(--muted); font-size: 0.75rem; }
.purchase-note { margin: 12px 0 4px; color: var(--aqua); font-size: 0.75rem; text-align: center; }
.download-info { margin-top: 12px; padding-top: 8px; border-top: 1px solid var(--line); }
.download-info summary { min-height: 44px; padding-block: 12px; color: var(--muted); font-size: 0.8125rem; cursor: pointer; }
.download-info summary::marker { color: var(--aqua); }
.download-info summary:hover { color: var(--ink); }
.download-info p { max-width: 65ch; margin: 8px 0 16px; color: var(--muted); font-size: 0.8125rem; }
.download-info p:last-child { margin-bottom: 0; }
.form-message { margin: 0 0 12px; color: var(--danger); font-size: 0.8125rem; }
.form-message:empty { display: none; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 14px; border: 1px solid transparent; border-radius: 5px; font-size: 0.875rem; font-weight: 500; transition: background-color 150ms ease, border-color 150ms ease; }
.button-secondary { border-color: var(--control-line); background: transparent; }
.button-secondary:hover { border-color: var(--muted); background: var(--panel-raised); }
.button-primary { color: var(--bg); background: var(--aqua); font-weight: 600; }
.button-primary:hover { background: #9ce8d5; }
.button:disabled { cursor: not-allowed; border-color: var(--line); color: var(--muted); background: transparent; }
.request-button { width: 100%; }
.request-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.success-card { display: flex; gap: 16px; align-items: center; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.success-icon { flex-shrink: 0; width: 24px; height: 24px; fill: none; stroke: var(--aqua); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.success-card > div { flex: 1; }
.success-card h2 { margin-bottom: 4px; font-size: 1.125rem; font-weight: 600; }
.success-card p { margin-bottom: 0; color: var(--muted); font-size: 0.875rem; }

.profile-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.profile-heading p { margin: 0; color: var(--muted); }
.profile-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.profile-summary span, .profile-summary small { display: block; color: var(--muted); font-size: 0.8125rem; }
.profile-summary strong { display: block; margin: 8px 0 4px; font-size: 1.5rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.profile-columns { display: grid; grid-template-columns: minmax(0, 2fr) minmax(270px, 1fr); gap: 32px; align-items: start; }
.profile-panel-copy { margin: 12px 0; color: var(--muted); font-size: 0.875rem; }
.history-empty { padding: 24px 0; color: var(--muted); font-size: 0.875rem; }
.download-item { padding: 20px 0; border-bottom: 1px solid var(--line); }
.download-top { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.download-top strong { font-size: 0.875rem; font-weight: 600; }
.download-top span { color: var(--muted); font-size: 0.75rem; white-space: nowrap; }
.download-meta { margin: 8px 0 12px; color: var(--muted); font-size: 0.75rem; }
.download-update { margin: 0 0 12px; color: var(--aqua); font-size: 0.8125rem; }
.download-update.expired { color: var(--muted); }
.download-stations { margin: 0 0 16px; padding-left: 20px; }
.download-stations li { margin: 6px 0; font-size: 0.875rem; }
.download-stations small { color: var(--muted); }
.credit-item { display: flex; justify-content: space-between; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 0.875rem; }
.credit-item:last-child { border-bottom: 0; }
.credit-item small { display: block; margin-top: 4px; color: var(--muted); }
.credit-item strong { white-space: nowrap; color: var(--aqua); font-variant-numeric: tabular-nums; }
.credit-item strong.negative { color: var(--danger); }

dialog { width: min(620px, calc(100% - 32px)); max-height: calc(100vh - 48px); padding: 0; border: 0; border-radius: 12px; color: var(--ink); background: var(--panel); box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4); }
dialog::backdrop { background: rgba(0, 0, 0, 0.65); }
#authDialog { max-width: 440px; }
.dialog-shell { padding: 24px; }
.dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.dialog-header h2 { margin: 0; font-size: 1.25rem; font-weight: 600; }
.dialog-copy { margin: 16px 0 24px; color: var(--muted); font-size: 0.875rem; }
.auth-tabs { display: flex; gap: 24px; margin: 16px 0 24px; border-bottom: 1px solid var(--line); }
.auth-tabs button { min-height: 44px; margin-bottom: -1px; padding: 0 0 8px; border: 0; border-bottom: 2px solid transparent; color: var(--muted); background: transparent; font-size: 0.875rem; }
.auth-tabs button[aria-selected="true"] { border-bottom-color: var(--aqua); color: var(--aqua); }
.auth-form { display: grid; gap: 16px; }
.auth-form label { display: grid; gap: 6px; color: var(--muted); font-size: 0.8125rem; }
.auth-form p { margin: 0; color: var(--muted); font-size: 0.8125rem; }
.auth-form .button { width: 100%; margin-top: 4px; }
.verification-notice { margin-bottom: 24px; padding-block: 16px; border-bottom: 1px solid var(--line); }
.verification-notice p { margin: 0 0 12px; overflow-wrap: anywhere; }
.verification-notice p:empty { display: none; }
.form-message[data-state="success"] { color: var(--ink); }
.dialog-shell > .form-message { margin: 16px 0 0; }
.purchase-quantity { display: block; margin-bottom: 24px; }
.purchase-quantity input { max-width: 160px; }
.station-pricing { width: 100%; border-collapse: collapse; font-size: 0.875rem; font-variant-numeric: tabular-nums; }
.station-pricing caption { margin-bottom: 12px; color: var(--muted); text-align: left; }
.station-pricing th, .station-pricing td { padding: 12px 0; border-bottom: 1px solid var(--line); text-align: left; }
.station-pricing th { font-weight: 500; }
.station-pricing thead th { color: var(--muted); }
.station-pricing td, .station-pricing th:last-child { text-align: right; }
.station-pricing td { color: var(--aqua); white-space: nowrap; }
.pricing-details { margin-top: 8px; font-size: 0.8125rem; }
.pricing-details summary { min-height: 44px; padding-block: 12px; color: var(--aqua); cursor: pointer; }
.pricing-details summary:hover { color: var(--ink); }
.pricing-details ul { display: grid; gap: 8px; margin: 4px 0 12px; padding: 0; list-style: none; }
.pricing-details li { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); }
.pricing-details li span:last-child { color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
#continueDownload { margin-top: 16px; }
.dialog-status { margin: 16px 0 0; color: var(--aqua); font-size: 0.875rem; }
.dialog-status:empty { display: none; }

@media (max-width: 900px) {
  .workspace, .profile-columns { grid-template-columns: 1fr; }
  .request-panel { position: static; }
  .station-list { max-height: 360px; }
}

@media (max-width: 620px) {
  .topbar { flex-wrap: wrap; gap: 8px; padding-inline: 16px; }
  .account-actions { margin-left: auto; flex-wrap: wrap; justify-content: flex-end; gap: 4px; }
  .account-actions .button { padding-inline: 10px; font-size: 0.8125rem; }
  .balance { padding: 4px 8px; }
  main { width: calc(100% - 32px); padding-top: 24px; }
  .intro { align-items: flex-start; flex-direction: column; gap: 12px; margin-bottom: 20px; }
  h1 { font-size: 1.75rem; }
  .intro-status { max-width: none; text-align: left; }
  .selection-filters, .text-filters { grid-template-columns: 1fr; }
  .catalog-panel, .request-panel { padding: 18px; }
  .catalog-actions .mode-button { min-width: 78px; padding-inline: 8px; font-size: 0.8125rem; }
  .catalog-actions .button { padding-inline: 8px; font-size: 0.75rem; }
  .station-list { max-height: 280px; }
  .map-canvas { height: 360px; }
  .profile-heading { align-items: flex-start; flex-direction: column; gap: 16px; }
  .profile-summary { grid-template-columns: 1fr; gap: 20px; }
  .success-card { flex-wrap: wrap; }
  .success-card > div { flex-basis: calc(100% - 40px); }
  .success-card .button { margin-left: 40px; }
  .dialog-shell { padding: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .button { transition: none; }
}