/* ==============================
   Naval Fleet Tracker - Styles
   ============================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2332;
  --bg-card: #1e293b;
  --bg-hover: #253347;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  --accent-orange: #f97316;
  --border: #1e293b;
  --border-light: #334155;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
  --radius: 8px;
  --radius-sm: 4px;
  --header-height: 56px;
  --sidebar-width: 320px;
  --news-width: 360px;
  --transition: all 0.2s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ========== HEADER ========== */
#header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  position: relative;
}

.header-left { display: flex; align-items: center; gap: 16px; }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-cyan);
}

.logo h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: var(--text-muted);
  font-size: 12px;
  padding-left: 16px;
  border-left: 1px solid var(--border-light);
}

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

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.btn-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ========== MAIN LAYOUT ========== */
#app {
  display: flex;
  height: calc(100vh - var(--header-height));
}

/* ========== SIDEBAR ========== */
#sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-section {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.vessel-count {
  background: var(--accent-blue);
  color: white;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 10px;
  margin-left: auto;
}

/* Filters */
.filter-group {
  margin-bottom: 10px;
}

.filter-group label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.filter-group select,
#vessel-search {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.filter-group select:focus,
#vessel-search:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.filter-group select[multiple] {
  height: auto;
  min-height: 32px;
}

.btn-secondary {
  width: 100%;
  padding: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  margin-top: 8px;
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Stats */
#stats-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stat-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 10px;
  text-align: center;
}

.stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

#country-breakdown {
  margin-top: 12px;
}

.country-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 12px;
}

.country-bar-name {
  width: 100px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.country-bar-fill {
  flex: 1;
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  overflow: hidden;
}

.country-bar-fill-inner {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.country-bar-count {
  color: var(--text-muted);
  font-size: 11px;
  min-width: 20px;
  text-align: right;
}

/* Vessel Search */
#vessel-search {
  margin-bottom: 10px;
}

/* Vessel List */
#vessel-list {
  max-height: 400px;
  overflow-y: auto;
}

.vessel-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.vessel-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.vessel-item.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-blue);
}

.vessel-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.vessel-icon.carrier { background: rgba(239, 68, 68, 0.2); }
.vessel-icon.destroyer { background: rgba(59, 130, 246, 0.2); }
.vessel-icon.frigate { background: rgba(16, 185, 129, 0.2); }
.vessel-icon.submarine { background: rgba(139, 92, 246, 0.2); }
.vessel-icon.amphibious { background: rgba(249, 115, 22, 0.2); }
.vessel-icon.other { background: rgba(100, 116, 139, 0.2); }

.vessel-info { flex: 1; min-width: 0; }

.vessel-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.vessel-meta {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  gap: 6px;
  align-items: center;
}

.vessel-status {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 500;
}

.vessel-status.deployed { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.vessel-status.in-port { background: rgba(100, 116, 139, 0.2); color: var(--text-muted); }
.vessel-status.active { background: rgba(59, 130, 246, 0.2); color: var(--accent-blue); }
.vessel-status.training { background: rgba(245, 158, 11, 0.2); color: var(--accent-yellow); }
.vessel-status.patrol { background: rgba(6, 182, 212, 0.2); color: var(--accent-cyan); }
.vessel-status.refit { background: rgba(239, 68, 68, 0.2); color: var(--accent-red); }

/* ========== MAP ========== */
#map-container {
  flex: 1;
  position: relative;
}

#map {
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
}

/* Dark map tiles */
.leaflet-tile-pane { filter: brightness(0.7) contrast(1.1) saturate(0.8); }
.leaflet-container { background: var(--bg-primary); }

/* Map controls */
#map-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 800;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.map-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.map-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.map-btn.active {
  background: rgba(59, 130, 246, 0.2);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* Map legend */
#map-legend {
  position: absolute;
  bottom: 20px;
  left: 12px;
  z-index: 800;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 12px;
}

#map-legend h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

.legend-icon {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-icon.carrier { background: var(--accent-red); }
.legend-icon.destroyer { background: var(--accent-blue); }
.legend-icon.frigate { background: var(--accent-green); }
.legend-icon.submarine { background: var(--accent-purple); }
.legend-icon.amphibious { background: var(--accent-orange); }
.legend-icon.other { background: var(--text-muted); }

/* Custom markers */
.vessel-marker {
  position: relative;
}

.vessel-marker-inner {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  transition: transform 0.2s;
  cursor: pointer;
}

.vessel-marker-inner:hover {
  transform: scale(1.3);
  z-index: 1000 !important;
}

.vessel-marker-inner.carrier { background: var(--accent-red); }
.vessel-marker-inner.destroyer { background: var(--accent-blue); }
.vessel-marker-inner.frigate { background: var(--accent-green); }
.vessel-marker-inner.submarine { background: var(--accent-purple); }
.vessel-marker-inner.amphibious { background: var(--accent-orange); }
.vessel-marker-inner.other { background: var(--text-muted); }

/* Marker heading indicator */
.vessel-heading {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 8px solid white;
}

/* Leaflet popup override */
.leaflet-popup-content-wrapper {
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
}

.leaflet-popup-tip { background: var(--bg-card); }

.leaflet-popup-content {
  margin: 12px 16px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  line-height: 1.5;
}

.popup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.popup-flag { font-size: 20px; }

.popup-name {
  font-weight: 600;
  font-size: 14px;
}

.popup-type {
  color: var(--text-muted);
  font-size: 12px;
}

.popup-detail {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.popup-detail-label {
  color: var(--text-muted);
  font-size: 12px;
}

.popup-detail-value {
  font-size: 12px;
  font-weight: 500;
}

.popup-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 6px;
  background: var(--accent-blue);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}

.popup-btn:hover { background: #2563eb; }

/* ========== NEWS PANEL ========== */
#news-panel {
  width: var(--news-width);
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

.news-filters {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.news-filter {
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  border-radius: 12px;
  font-size: 11px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.news-filter:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.news-filter.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

#news-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.news-item {
  padding: 12px;
  border-radius: var(--radius);
  margin-bottom: 6px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.news-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.news-source {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.news-source-name {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent-cyan);
}

.news-date {
  font-size: 10px;
  color: var(--text-muted);
}

.news-title {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.news-summary {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-category {
  display: inline-block;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  margin-top: 6px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

/* ========== MODAL ========== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden { display: none; }

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 24px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

.modal-close:hover { color: var(--text-primary); }

.modal-vessel-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.modal-vessel-flag { font-size: 40px; }

.modal-vessel-name { font-size: 22px; font-weight: 700; }
.modal-vessel-class { color: var(--text-muted); font-size: 14px; }

.modal-section {
  margin-bottom: 16px;
}

.modal-section h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.modal-field {
  background: var(--bg-tertiary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.modal-field-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.modal-field-value {
  font-size: 14px;
  font-weight: 500;
  margin-top: 2px;
}

/* ========== LOADING ========== */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-muted);
}

.spinner {
  width: 30px;
  height: 30px;
  border: 3px solid var(--border-light);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ========== HOTSPOTS ========== */
.hotspot-circle {
  border-radius: 50%;
  opacity: 0.15;
  animation: hotspot-pulse 3s infinite;
}

@keyframes hotspot-pulse {
  0%, 100% { opacity: 0.15; transform: scale(1); }
  50% { opacity: 0.25; transform: scale(1.05); }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1400px) {
  :root {
    --sidebar-width: 280px;
    --news-width: 300px;
  }
}

@media (max-width: 1100px) {
  #sidebar { display: none; }
  :root { --news-width: 280px; }
}

@media (max-width: 800px) {
  #news-panel { display: none; }
  .subtitle { display: none; }
}