/* ============================================================
   Tanker Map — Dark Maritime Theme
   ============================================================ */

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

:root {
  --bg:         #0b0e14;
  --surface:    #131720;
  --surface-2:  #1a2030;
  --border:     rgba(255,255,255,0.07);
  --text-1:     #e8ecf0;
  --text-2:     #8a9bb0;
  --text-3:     #4a5568;
  --accent:     #3b82f6;
  --up:         #22c55e;
  --down:       #ef4444;
  --header-h:   48px;
  --filter-h:   48px;
  --sidebar-w:  240px;
  --detail-w:   300px;

  /* vessel class colours */
  --vlcc:     #ef4444;
  --suezmax:  #f97316;
  --aframax:  #eab308;
  --lr2:      #06b6d4;
  --mr:       #60a5fa;
  --unknown:  #6b7280;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text-1);
  font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(11,14,20,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  z-index: 1000;
}

#header-left {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 160px;
}

#header-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

#header-sub {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

#header-stats {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 11px;
}

.stat-label { color: var(--text-2); }
.stat-value { color: var(--text-1); font-weight: 700; font-variant-numeric: tabular-nums; }

#stat-ws { gap: 5px; }

.stat-dot { font-size: 8px; }
.dot-live  { color: var(--up); animation: pulse 2s infinite; }
.dot-dead  { color: var(--down); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

#ws-status { font-size: 10px; color: var(--text-2); }

#header-baltic {
  margin-left: auto;
  display: flex;
  gap: 6px;
}

.baltic-badge {
  padding: 2px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 10px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-2);
}
.baltic-badge.up   { color: var(--up); border-color: rgba(34,197,94,0.2); }
.baltic-badge.down { color: var(--down); border-color: rgba(239,68,68,0.2); }

/* ── Layout ─────────────────────────────────────────────────────────────────── */
#app {
  position: fixed;
  top: var(--header-h);
  bottom: var(--filter-h);
  left: 0; right: 0;
  display: flex;
}

/* ── Zone Sidebar ────────────────────────────────────────────────────────────── */
#zone-sidebar {
  width: var(--sidebar-w);
  height: 100%;
  background: rgba(11,14,20,0.92);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10;
  flex-shrink: 0;
}

#sidebar-header {
  padding: 12px 14px 10px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#sidebar-update {
  font-size: 9px;
  color: var(--text-3);
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

#zone-list {
  overflow-y: auto;
  flex: 1;
  padding: 6px 0;
}

#zone-list::-webkit-scrollbar { width: 3px; }
#zone-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.zone-card {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}
.zone-card:hover { background: var(--surface); }

.zone-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 6px;
  flex-shrink: 0;
}

.zone-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-1);
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}

.zone-count {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.zone-count span { font-size: 10px; color: var(--text-2); font-weight: 400; margin-left: 3px; }

.zone-sub {
  font-size: 9px;
  color: var(--text-3);
  margin-top: 2px;
}

.zone-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-top: 5px;
}

/* ── Map ─────────────────────────────────────────────────────────────────────── */
#map {
  flex: 1;
  height: 100%;
  z-index: 1;
}

/* Override Leaflet defaults */
.leaflet-container { background: #0b0e14; }
.leaflet-control-zoom a {
  background: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-1) !important;
}
.leaflet-control-zoom a:hover { background: var(--surface-2) !important; }
.leaflet-control-attribution {
  background: rgba(11,14,20,0.7) !important;
  color: var(--text-3) !important;
  font-size: 9px !important;
}
.leaflet-control-attribution a { color: var(--text-3) !important; }

/* ── Vessel Popup ────────────────────────────────────────────────────────────── */
.leaflet-popup-content-wrapper {
  background: var(--surface) !important;
  border: 1px solid var(--border) !important;
  border-radius: 10px !important;
  color: var(--text-1) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5) !important;
}
.leaflet-popup-tip { background: var(--surface) !important; }
.leaflet-popup-content { margin: 12px 14px !important; }

.vessel-popup { min-width: 200px; }

.vessel-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 4px;
}

.vessel-class-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.vessel-class-badge.vlcc    { background: rgba(239,68,68,0.15);   color: var(--vlcc); }
.vessel-class-badge.suezmax { background: rgba(249,115,22,0.15);  color: var(--suezmax); }
.vessel-class-badge.aframax { background: rgba(234,179,8,0.15);   color: var(--aframax); }
.vessel-class-badge.lr2     { background: rgba(6,182,212,0.15);   color: var(--lr2); }
.vessel-class-badge.mr      { background: rgba(96,165,250,0.15);  color: var(--mr); }
.vessel-class-badge.unknown { background: rgba(107,114,128,0.15); color: var(--unknown); }

.vessel-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
.vessel-table td {
  padding: 2px 4px;
  vertical-align: middle;
}
.vessel-table td:first-child { color: var(--text-2); width: 70px; }
.vessel-table td:last-child  { color: var(--text-1); font-weight: 500; }

.track-btn {
  margin-top: 8px;
  width: 100%;
  padding: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.track-btn:hover { background: rgba(59,130,246,0.15); }

/* ── Detail Panel ────────────────────────────────────────────────────────────── */
#detail-panel {
  width: var(--detail-w);
  height: 100%;
  background: rgba(11,14,20,0.95);
  border-left: 1px solid var(--border);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
#detail-panel.hidden { transform: translateX(100%); display: none; }

#detail-header {
  padding: 14px 14px 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
#detail-close {
  position: absolute;
  right: 12px; top: 12px;
  cursor: pointer;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1;
}
#detail-close:hover { color: var(--text-1); }
#detail-name { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
#detail-class-badge { display: inline-block; }

#detail-body {
  overflow-y: auto;
  flex: 1;
  padding: 12px 14px;
}

.detail-section {
  margin-bottom: 16px;
}
.detail-section-title {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 3px 0;
  font-size: 11px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.detail-row .key   { color: var(--text-2); }
.detail-row .value { color: var(--text-1); font-weight: 500; font-variant-numeric: tabular-nums; }

/* ── Filter Bar ──────────────────────────────────────────────────────────────── */
#filter-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--filter-h);
  background: rgba(11,14,20,0.95);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  z-index: 1000;
  overflow-x: auto;
}
#filter-bar::-webkit-scrollbar { height: 0; }

.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.filter-group label:first-child {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.filter-chips {
  display: flex;
  gap: 3px;
}

.chip {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
  white-space: nowrap;
}
.chip input[type="checkbox"] { display: none; }
.chip.active {
  background: rgba(59,130,246,0.12);
  border-color: rgba(59,130,246,0.35);
  color: var(--text-1);
}

#zone-filter {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-1);
  font-size: 11px;
  padding: 3px 8px;
  outline: none;
  cursor: pointer;
}

.speed-group input[type="range"] {
  width: 80px;
  accent-color: var(--accent);
}

/* ── Class color legend (small dots in badges) ─────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 9px;
  font-weight: 700;
}
.badge.vlcc    { background: rgba(239,68,68,0.12);  color: var(--vlcc); }
.badge.suezmax { background: rgba(249,115,22,0.12); color: var(--suezmax); }
.badge.aframax { background: rgba(234,179,8,0.12);  color: var(--aframax); }
.badge.lr2     { background: rgba(6,182,212,0.12);  color: var(--lr2); }
.badge.mr      { background: rgba(96,165,250,0.12); color: var(--mr); }
.badge.unknown { background: rgba(107,114,128,0.12);color: var(--unknown); }

/* ── Vessel track polyline ───────────────────────────────────────────────────── */
.vessel-track-line { stroke: rgba(96,165,250,0.6); stroke-width: 2px; stroke-dasharray: 4 4; }

/* ── Loading indicator ───────────────────────────────────────────────────────── */
#loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 9999;
  transition: opacity 0.4s;
}
#loading-overlay.fade-out { opacity: 0; pointer-events: none; }
.loader-text { font-size: 13px; color: var(--text-2); }