/* ═══════════════════════════════════════════════════════════════
   Ledger Design System — ledger.css
   Dark navy-blue theme matching the 2D viewer
   ═══════════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@500;600;700&display=swap');

/* ═══ Design Tokens ═══ */
:root {
  --l-bg: #0a1628;
  --l-bg-card: #111827;
  --l-bg-elevated: #1a2235;
  --l-bg-hover: #1e2a40;
  --l-brand: #4da03a;
  --l-brand-dim: rgba(77, 160, 58, 0.15);
  --l-text: #e5e8eb;
  --l-text-dim: #8896a8;
  --l-text-muted: #5a6878;
  --l-border: rgba(255, 255, 255, 0.06);
  --l-border-light: rgba(255, 255, 255, 0.1);

  --sev-high: #ef4444;
  --sev-med: #f59e0b;
  --sev-low: #22c55e;
  --sev-info: #3b82f6;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 8px;
  --radius-sm: 4px;
  --radius-pill: 20px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--l-bg);
  color: var(--l-text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ═══ App Header (matches 2D viewer) ═══ */
.ledger-app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 16px;
  background: rgba(33, 48, 88, 0.95);
  border-bottom: 1px solid var(--l-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.ledger-app-header .header-left,
.ledger-app-header .header-center,
.ledger-app-header .header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ledger-app-header .logo {
  height: 34px;
  object-fit: contain;
}

.ledger-app-header .course-selector {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--l-border);
  color: var(--l-text);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  min-width: 160px;
}

.ledger-app-header .mode-btn {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--l-text-dim);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
}
.ledger-app-header .mode-btn:hover { color: var(--l-text); background: rgba(255,255,255,0.06); }
.ledger-app-header .mode-btn.active {
  color: var(--l-brand);
  background: var(--l-brand-dim);
}

.ledger-app-header .header-btn {
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--l-text-dim);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--l-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}
.ledger-app-header .header-btn:hover { color: var(--l-text); background: rgba(255,255,255,0.1); }

/* ═══ Ledger Toolbar ═══ */
.ledger-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid var(--l-border);
  background: var(--l-bg);
}

.ledger-title {
  font-family: 'Rajdhani', var(--font);
  font-size: 18px;
  font-weight: 500;
  color: var(--l-text);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.view-switcher {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.04);
  padding: 3px;
  border-radius: var(--radius-pill);
}

.view-pill {
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--l-text-dim);
  background: none;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s;
}
.view-pill:hover { color: var(--l-text); }
.view-pill.active {
  background: var(--l-brand);
  color: #fff;
}

.status-toggle {
  display: flex;
  gap: 2px;
  background: rgba(255,255,255,0.04);
  padding: 3px;
  border-radius: var(--radius-pill);
}

.status-pill {
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--l-text-dim);
  background: none;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s;
}
.status-pill:hover { color: var(--l-text); }
.status-pill.active {
  background: var(--l-brand);
  color: #fff;
}

/* ═══ Season Selector Bar ═══ */
.season-bar {
  display: flex;
  gap: 0;
  padding: 8px 24px;
  border-bottom: 1px solid var(--l-border);
  background: var(--l-bg);
}

.season-btn {
  flex: 1;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--l-text-dim);
  background: var(--l-bg-elevated);
  border: 1px solid var(--l-border);
  cursor: pointer;
  transition: all 0.2s;
}
.season-btn:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.season-btn:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.season-btn:hover { color: var(--l-text); background: var(--l-bg-hover); }
.season-btn.active {
  background: var(--l-brand);
  color: #fff;
  border-color: var(--l-brand);
}

/* ═══ Main Content ═══ */
.ledger-body {
  padding: 20px 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.panel-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--l-text);
}

/* ═══ Severity Filter Chips ═══ */
.severity-filters {
  display: flex;
  gap: 4px;
}

.sev-chip {
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--l-text-dim);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--l-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s;
}
.sev-chip:hover { color: var(--l-text); }
.sev-chip.active { background: var(--l-brand); color: #fff; border-color: var(--l-brand); }
.sev-chip.chip-high.active { background: var(--sev-high); border-color: var(--sev-high); }
.sev-chip.chip-med.active { background: var(--sev-med); border-color: var(--sev-med); color: #111; }
.sev-chip.chip-low.active { background: var(--sev-low); border-color: var(--sev-low); color: #111; }

/* ═══ Observation Cards (Recent + Issue Lists) ═══ */
.recent-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.date-group-header {
  font-size: 14px;
  font-weight: 700;
  color: var(--l-text);
  padding: 12px 4px 6px;
  border-bottom: 1px solid var(--l-border);
  margin-bottom: 6px;
}
.date-group-header:first-child {
  padding-top: 0;
}

.date-group-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

@media (min-width: 1000px) {
  .date-group-cards {
    grid-template-columns: 1fr 1fr;
  }
}

.obs-card {
  display: flex;
  align-items: stretch;
  background: var(--l-bg-card);
  border: 1px solid var(--l-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.15s;
  cursor: default;
}
.obs-card:hover {
  border-color: var(--l-border-light);
  transform: translateY(-1px);
}

.obs-thumb {
  width: 80px;
  min-height: 80px;
  background: var(--l-bg-elevated) center / cover no-repeat;
  flex-shrink: 0;
}

.obs-body {
  flex: 1;
  padding: 10px 14px;
  min-width: 0;
}

.obs-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.obs-severity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.obs-category {
  font-size: 13px;
  font-weight: 700;
  color: var(--l-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.obs-time {
  font-size: 12px;
  font-weight: 600;
  color: var(--l-text-dim);
  margin-left: auto;
  white-space: nowrap;
  padding: 0 4px;
}

.obs-status-pill {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: capitalize;
  margin-left: auto;
  flex-shrink: 0;
}
.obs-status-pill.open { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.obs-status-pill.resolved { background: rgba(34, 197, 94, 0.15); color: #22c55e; }

.obs-desc {
  font-size: 12px;
  color: var(--l-text-dim);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.obs-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.obs-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--l-text-muted);
}

.obs-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

.obs-mark-btn {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font);
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.obs-mark-btn:hover { background: rgba(239, 68, 68, 0.25); }
.obs-mark-btn.reopen {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.3);
}
.obs-mark-btn.reopen:hover { background: rgba(59, 130, 246, 0.25); }

.obs-edit-btn {
  padding: 6px 8px;
  font-size: 14px;
  background: none;
  border: 1px solid var(--l-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--l-text-dim);
  transition: all 0.2s;
}
.obs-edit-btn:hover { color: var(--l-text); background: rgba(255,255,255,0.06); }

.load-more-btn {
  display: block;
  width: 100%;
  padding: 10px;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  color: var(--l-brand);
  background: var(--l-brand-dim);
  border: 1px solid rgba(77, 160, 58, 0.2);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}
.load-more-btn:hover { background: rgba(77, 160, 58, 0.25); }

/* ═══ Season Timeline Card ═══ */
.season-timeline-card {
  background: var(--l-bg-card);
  border: 1px solid var(--l-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 8px;
}

.season-comparison-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 20px;
}

.season-timeline-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.season-year-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 80px;
  transition: opacity 0.3s;
}

.season-year-row.future {
  opacity: 0.3;
}

.season-year-label {
  width: 100px;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--l-text);
}
.season-year-label small {
  display: block;
  font-size: 10px;
  font-weight: 500;
  color: var(--l-text-muted);
}

.season-year-track {
  flex: 1;
  height: 80px;
  background: var(--l-bg-elevated);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: visible;
  border: 1px solid var(--l-border);
}

/* Smaller circles with severity-colored borders for density */
.season-thumb-circle {
  position: absolute;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--l-bg-elevated) center / cover no-repeat;
  border: 2px solid #e67e22;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 2;
}
.season-thumb-circle:hover {
  transform: translate(-50%, -50%) scale(1.35);
  box-shadow: 0 0 12px rgba(77, 160, 58, 0.5);
  z-index: 10;
}
.season-thumb-circle.selected {
  border-color: var(--l-brand) !important;
  box-shadow: 0 0 16px rgba(77, 160, 58, 0.6);
  z-index: 9;
}

/* Today marker — vertical line showing current date */
.season-today-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--l-brand);
  box-shadow: 0 0 6px rgba(77, 160, 58, 0.6);
  z-index: 5;
  transform: translateX(-50%);
}

/* Hatched overlay for the future portion of the current season */
.season-future-overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    135deg,
    transparent,
    transparent 4px,
    rgba(255, 255, 255, 0.03) 4px,
    rgba(255, 255, 255, 0.03) 8px
  );
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  z-index: 1;
}

/* "Not yet" label for fully-future rows */
.future-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 12px;
  font-weight: 600;
  color: var(--l-text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.season-x-axis {
  display: flex;
  justify-content: space-between;
  padding: 8px 116px 0 116px;
  font-size: 11px;
  color: var(--l-text-muted);
}

/* ═══ Weather Comparison Table ═══ */
.weather-strip {
  background: var(--l-bg-card);
  border: 1px solid var(--l-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 8px;
}

.weather-header {
  margin-bottom: 12px;
}

.weather-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--l-text);
}

.weather-table {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.weather-row {
  display: grid;
  grid-template-columns: 120px repeat(3, 1fr);
  gap: 0;
  border-bottom: 1px solid var(--l-border);
}
.weather-row:last-child { border-bottom: none; }
.weather-row:nth-child(even) { background: rgba(255,255,255,0.015); }

.weather-row-header {
  border-bottom: 1px solid var(--l-border-light);
}

.weather-cell {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--l-text);
  text-align: center;
}
.weather-cell.dim {
  color: var(--l-text-muted);
  opacity: 0.5;
}

.weather-label {
  text-align: left;
  font-size: 12px;
  font-weight: 500;
  color: var(--l-text-dim);
}

.weather-year {
  font-size: 14px;
  font-weight: 800;
  color: var(--l-text);
}

/* ═══ Calendar ═══ */
.calendar-container {
  background: var(--l-bg-card);
  border: 1px solid var(--l-border);
  border-radius: var(--radius);
  padding: 20px;
}

.cal-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.cal-nav-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--l-bg-elevated);
  border: 1px solid var(--l-border);
  color: var(--l-text);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  font-family: var(--font);
}
.cal-nav-btn:hover { background: var(--l-bg-hover); }

.cal-month-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--l-text);
  min-width: 180px;
  text-align: center;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.cal-header-cell {
  font-size: 11px;
  font-weight: 600;
  color: var(--l-text-muted);
  text-align: center;
  padding: 6px 0;
  text-transform: uppercase;
}

.cal-cell {
  aspect-ratio: 1.3;
  padding: 6px;
  border-radius: var(--radius-sm);
  background: var(--l-bg-elevated);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}
.cal-cell.empty { background: none; cursor: default; }
.cal-cell:not(.empty):hover { border-color: var(--l-border-light); }
.cal-cell.today { border-color: var(--l-brand); box-shadow: inset 0 0 0 1px var(--l-brand); }
.cal-cell.selected { border-color: var(--l-brand); background: var(--l-brand-dim); }

.cal-day-num {
  font-size: 12px;
  font-weight: 600;
  color: var(--l-text-dim);
}
.cal-cell.today .cal-day-num { color: var(--l-brand); }

.cal-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-top: 4px;
}

.cal-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* ═══ Popover ═══ */
.ledger-popover {
  position: fixed;
  width: 420px;
  max-height: 520px;
  background: var(--l-bg-card);
  border: 1px solid var(--l-border-light);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  z-index: 9000;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  overflow: hidden;
}
.ledger-popover.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.pop-media-row {
  display: flex;
  height: 160px;
}

.pop-photo {
  flex: 1;
  background: var(--l-bg-elevated) center / cover no-repeat;
  position: relative;
}

.pop-photo-link {
  flex: 1;
  display: block;
  cursor: pointer;
}
.pop-photo-link .pop-photo {
  height: 100%;
  transition: opacity 0.2s;
}
.pop-photo-link:hover .pop-photo {
  opacity: 0.85;
}

.pop-map-inset {
  flex: 1;
  background: var(--l-bg-elevated);
  border-left: 1px solid var(--l-border);
}

.pop-body {
  padding: 12px;
}

.pop-cat {
  font-size: 14px;
  font-weight: 700;
  color: var(--l-text);
  margin-bottom: 4px;
}

.pop-desc {
  font-size: 12px;
  color: var(--l-text-dim);
  line-height: 1.4;
  margin-bottom: 10px;
}

.pop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.pop-grid-item {
  font-size: 10px;
}
.pop-grid-label {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--l-text-muted);
  margin-bottom: 2px;
}
.pop-grid-value {
  font-size: 12px;
  font-weight: 500;
  color: var(--l-text);
}

.pop-actions {
  display: flex;
  gap: 6px;
}

/* ═══ Empty State ═══ */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--l-text-dim);
}
.empty-state-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

/* ═══ Loading State ═══ */
.loading-state {
  text-align: center;
  padding: 32px;
  color: var(--l-text-muted);
  font-size: 13px;
}

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
  .ledger-toolbar { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .ledger-body { padding: 12px; }
  .season-bar { padding: 6px 12px; }
  .obs-thumb { width: 60px; }
  .season-year-label { width: 60px; font-size: 12px; }
  .season-x-axis { padding-left: 76px; padding-right: 0; }
  .ledger-popover { width: 280px; }
}