/* ---------- Design tokens ---------- */
:root {
  --bg-0: #071620;
  --bg-1: #0e2432;
  --bg-2: #143040;
  --bg-panel: rgba(14, 36, 50, 0.85);
  --bg-panel-solid: #0e2432;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text-1: #eef4f4;
  --text-2: #a6bcc2;
  --text-3: #74909a;
  --accent: #5fd6cf;           /* cyan — signature nuclear color */
  --accent-glow: rgba(95, 214, 207, 0.35);
  --op: #5fd6cf;               /* operational */
  --sus: #fbbf24;              /* suspended  */
  --uc:  #a78bfa;              /* under construction */
  --pl:  #94a3b8;              /* planned    */
  --sd:  #fb7185;              /* shutdown / decommissioned */
  --cancel: #64748b;           /* cancelled / never commissioned */

  --shadow-lg: 0 20px 60px -20px rgba(0, 0, 0, 0.6), 0 2px 8px -2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --radius-sm: 8px;

  --font-body: "Libre Franklin", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font-body);
  color: var(--text-1);
  background: var(--bg-0);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#map {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, #0e2432 0%, #071620 70%);
}

/* Hide MapLibre default controls that clash with our chrome, keep the attribution */
.maplibregl-ctrl-top-right { top: 88px; }
.maplibregl-ctrl-bottom-right { bottom: 18px; }
.maplibregl-ctrl-group { background: var(--bg-panel) !important; backdrop-filter: blur(12px); border: 1px solid var(--border) !important; box-shadow: var(--shadow-md) !important; overflow: hidden; }
.maplibregl-ctrl-group button { background-color: transparent !important; }
.maplibregl-ctrl-group button:hover { background-color: rgba(255,255,255,0.05) !important; }
.maplibregl-ctrl-group button + button { border-top: 1px solid var(--border) !important; }
.maplibregl-ctrl-group button span[class*="maplibregl-ctrl"] { filter: invert(1) brightness(1.2) hue-rotate(180deg); }
.maplibregl-ctrl-attrib { background: rgba(7,22,32,0.72) !important; color: var(--text-3) !important; font-family: var(--font-body); font-size: 10px !important; border-radius: 6px 0 0 0; padding: 3px 8px !important; }
.maplibregl-ctrl-attrib a { color: var(--text-2) !important; }
.maplibregl-canvas:focus { outline: none; }

/* ---------- Sidebar ---------- */
#sidebar {
  position: absolute;
  top: 18px; left: 18px; bottom: 18px;
  width: 320px;
  background: var(--bg-panel);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  color: var(--text-1);
  overflow-y: auto;
  z-index: 10;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
#sidebar::-webkit-scrollbar { width: 6px; }
#sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
#sidebar.collapsed { transform: translateX(-360px); opacity: 0; pointer-events: none; }

.brand {
  display: flex; align-items: flex-start; gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.brand .logo { width: 36px; height: 36px; color: var(--accent); flex-shrink: 0; filter: drop-shadow(0 0 6px var(--accent-glow)); }
.brand h1 {
  font-family: var(--font-body);
  font-size: 20px; font-weight: 600; letter-spacing: -0.01em;
  margin: 0; color: var(--text-1);
}
.brand .subtitle {
  margin: 2px 0 0; font-size: 12px; color: var(--text-2);
  font-family: var(--font-mono); letter-spacing: 0.02em;
}
.collapse-btn, .expand-btn {
  background: transparent; border: 1px solid var(--border);
  color: var(--text-2); cursor: pointer;
  width: 28px; height: 28px;
  border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-left: auto;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.collapse-btn:hover { color: var(--text-1); background: rgba(255,255,255,0.05); border-color: var(--border-strong); }

.expand-btn {
  position: absolute; top: 18px; left: 18px; z-index: 10;
  width: 40px; height: 40px;
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  color: var(--text-1);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s;
}
#sidebar.collapsed ~ .expand-btn { opacity: 1; pointer-events: auto; }
.expand-btn:hover { background: var(--bg-2); }

/* Rollup stats */
.rollup {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}
.rollup-item { min-width: 0; }
.rollup-num {
  font-family: var(--font-body);
  font-size: 22px; font-weight: 600; color: var(--accent);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.rollup-label {
  font-size: 10.5px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.09em;
  margin-top: 4px;
}

.filter-group { margin-bottom: 22px; }
.section-title {
  font-size: 10.5px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.12em;
  margin: 0 0 10px; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.legend, .reactor-legend { list-style: none; padding: 0; margin: 0; }
.legend li, .reactor-legend li {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px; margin: 0 -8px;
  font-size: 13px; color: var(--text-1);
  cursor: pointer; user-select: none;
  border-radius: 6px;
  transition: background 0.12s;
}
.legend li:hover, .reactor-legend li:hover { background: rgba(255,255,255,0.04); }
.legend li.off, .reactor-legend li.off { color: var(--text-3); }
.legend li.off .lgd-dot, .reactor-legend li.off .lgd-dot { opacity: 0.2; }

.lgd-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
  box-shadow: 0 0 0 1.5px rgba(255,255,255,0.85);
}
.lgd-label { flex: 1; }
.lgd-count {
  font-family: var(--font-mono);
  font-size: 11.5px; color: var(--text-2);
  font-variant-numeric: tabular-nums;
}

.size-legend {
  display: flex; align-items: flex-end; gap: 16px;
  padding: 8px 4px;
}
.size-legend-bubbles {
  position: relative;
  display: flex; align-items: flex-end;
  height: 46px;
}
.size-legend-bubbles .bubble {
  display: block;
  border-radius: 50%;
  background: rgba(95, 214, 207, 0.14);
  border: 1.2px solid var(--accent);
  margin-right: 6px;
}
.bubble.b-xl { width: 42px; height: 42px; }
.bubble.b-lg { width: 30px; height: 30px; }
.bubble.b-md { width: 22px; height: 22px; }
.bubble.b-sm { width: 14px; height: 14px; }
.bubble.b-xs { width: 8px; height: 8px; }
.size-legend-labels {
  display: flex; flex-direction: column;
  font-family: var(--font-mono);
  font-size: 10.5px; color: var(--text-2);
  gap: 3px;
}

.sidebar-footer {
  padding-top: 16px; margin-top: 8px;
  border-top: 1px solid var(--border);
  font-size: 11px; color: var(--text-3); line-height: 1.6;
}
.sidebar-footer .src-label {
  font-family: var(--font-mono); text-transform: uppercase;
  letter-spacing: 0.09em; color: var(--text-3); font-size: 10px;
  margin-right: 6px;
}
.sidebar-footer a { color: var(--text-2); text-decoration: none; border-bottom: 1px dotted var(--text-3); }
.sidebar-footer a:hover { color: var(--accent); border-color: var(--accent); }
.sidebar-footer .small { font-size: 10px; margin-top: 6px; }

/* ---------- Top-right toolbar ---------- */
.toolbar {
  position: absolute;
  top: 18px; right: 18px;
  display: flex; align-items: center; gap: 12px;
  z-index: 10;
}
.live-indicator {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12.5px; color: var(--text-1);
  font-family: var(--font-mono);
  box-shadow: var(--shadow-md);
}
.live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent), 0 0 0 3px rgba(95, 214, 207, 0.15);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.55; transform: scale(0.85); } }

.search-wrap {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  box-shadow: var(--shadow-md);
  transition: border-color 0.15s;
}
.search-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(95, 214, 207,0.1), var(--shadow-md); }
.search-icon { color: var(--text-3); flex-shrink: 0; }
#search {
  background: transparent; border: 0; outline: 0;
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 13px;
  padding: 10px 0;
  width: 240px;
}
#search::placeholder { color: var(--text-3); }

.search-results {
  position: absolute; top: calc(100% + 6px); right: 0;
  width: 320px; max-height: 360px; overflow-y: auto;
  background: var(--bg-panel-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
}
.search-result {
  padding: 9px 10px; border-radius: 6px;
  cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
}
.search-result:hover { background: rgba(255,255,255,0.05); }
.search-result .r-name { color: var(--text-1); flex: 1; }
.search-result .r-country { color: var(--text-3); font-size: 11px; font-family: var(--font-mono); }
.search-result-empty { padding: 14px; text-align: center; color: var(--text-3); font-size: 12px; }

/* ---------- Hover tooltip ---------- */
.hover-tooltip {
  position: absolute;
  z-index: 20;
  background: rgba(7, 22, 32, 0.92);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  min-width: 200px; max-width: 260px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 14px));
  animation: tooltipIn 0.15s ease-out;
}
@keyframes tooltipIn { from { opacity: 0; transform: translate(-50%, calc(-100% - 8px)); } to { opacity: 1; transform: translate(-50%, calc(-100% - 14px)); } }
.hover-tooltip::after {
  content: ""; position: absolute; left: 50%; bottom: -6px; transform: translateX(-50%) rotate(45deg);
  width: 10px; height: 10px;
  background: rgba(7, 22, 32, 0.92);
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
}
.hover-tooltip .t-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-2);
}
.hover-tooltip .t-status-dot { width: 7px; height: 7px; border-radius: 50%; }
.hover-tooltip .t-name {
  font-size: 15px; font-weight: 600;
  color: var(--text-1);
  margin: 4px 0 2px;
  letter-spacing: -0.01em;
}
.hover-tooltip .t-country {
  font-size: 12px; color: var(--text-2); margin-bottom: 8px;
}
.hover-tooltip .t-stats {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 10px;
  font-size: 12px; margin-top: 6px;
  padding-top: 6px; border-top: 1px solid var(--border);
}
.hover-tooltip .t-key { color: var(--text-3); font-family: var(--font-mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; }
.hover-tooltip .t-val { color: var(--text-1); font-variant-numeric: tabular-nums; }
.hover-tooltip .t-hint {
  margin-top: 10px; padding-top: 8px;
  border-top: 1px dashed var(--border);
  font-size: 10.5px; color: var(--text-3);
  font-family: var(--font-mono); letter-spacing: 0.03em;
  text-align: center;
}

/* ---------- Detail card ---------- */
[hidden] { display: none !important; }

.detail-card {
  position: absolute;
  top: 18px; right: 18px;
  bottom: 18px;
  width: 380px;
  background: var(--bg-panel);
  backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 15;
  overflow: hidden;
  display: flex; flex-direction: column;
  animation: cardIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes cardIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
.detail-card .close {
  position: absolute; top: 12px; right: 12px; z-index: 5;
  background: rgba(0,0,0,0.4);
  color: var(--text-1);
  border: 1px solid var(--border);
  width: 30px; height: 30px; border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
  transition: background 0.15s, transform 0.15s;
}
.detail-card .close:hover { background: rgba(0,0,0,0.7); transform: scale(1.05); }

.dc-hero {
  height: 130px;
  position: relative;
  background: linear-gradient(135deg, #0e2432 0%, #1b4256 100%);
  overflow: hidden;
  flex-shrink: 0;
}
.dc-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 40%, rgba(95, 214, 207,0.18) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(167,139,250,0.14) 0%, transparent 45%);
}
.dc-hero-icon {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: rgba(95, 214, 207,0.35);
}
.dc-hero-badges {
  position: absolute; bottom: 10px; left: 14px; right: 14px;
  display: flex; gap: 6px; flex-wrap: wrap;
}
.dc-badge {
  background: rgba(7,22,32,0.72);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.09em;
  padding: 3px 7px; border-radius: 999px;
}
.dc-badge.status-Operational { color: #0e2432; background: var(--op); border-color: var(--op); }
.dc-badge.status-Suspended-Operation { color: #0e2432; background: var(--sus); border-color: var(--sus); }
.dc-badge.status-Under-Construction { color: #f1f5f9; background: rgba(167,139,250,0.25); border-color: var(--uc); }
.dc-badge.status-Planned { color: #f1f5f9; background: rgba(148,163,184,0.2); border-color: var(--pl); }
.dc-badge.status-Shutdown, .dc-badge.status-Decommissioning-Completed { color: #f1f5f9; background: rgba(251,113,133,0.25); border-color: var(--sd); }
.dc-badge.status-Cancelled-Construction, .dc-badge.status-Never-Commissioned, .dc-badge.status-Suspended-Construction, .dc-badge.status-Unknown { color: #f1f5f9; background: rgba(100,116,139,0.25); border-color: var(--cancel); }

.dc-body {
  padding: 18px 20px 20px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.dc-body::-webkit-scrollbar { width: 6px; }
.dc-body::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
.dc-name {
  font-size: 22px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--text-1);
  margin: 0 0 4px;
  line-height: 1.15;
}
.dc-location {
  font-size: 13px; color: var(--text-2);
  margin: 0 0 16px;
}
.dc-headline {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 14px;
  background: rgba(95, 214, 207,0.05);
  border: 1px solid rgba(95, 214, 207,0.15);
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}
.dc-hl-item .dc-hl-num {
  font-size: 22px; font-weight: 600; color: var(--accent);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.dc-hl-item .dc-hl-label {
  font-size: 10px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.09em;
  margin-top: 4px;
}
.dc-section-title {
  font-size: 10.5px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.12em;
  margin: 0 0 10px; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.dc-kv {
  display: grid; grid-template-columns: 130px 1fr;
  gap: 8px 12px;
  font-size: 13px;
  margin-bottom: 20px;
}
.dc-kv dt { color: var(--text-3); font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; padding-top: 2px; }
.dc-kv dd { margin: 0; color: var(--text-1); font-variant-numeric: tabular-nums; }

.dc-reactors { margin-top: 8px; margin-bottom: 20px; }
.dc-reactor {
  padding: 10px 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  font-size: 12.5px;
}
.dc-reactor-head {
  display: flex; align-items: center; gap: 8px; margin-bottom: 4px;
}
.dc-reactor-name { flex: 1; color: var(--text-1); font-weight: 500; }
.dc-reactor-cap { font-family: var(--font-mono); color: var(--accent); font-size: 12px; font-variant-numeric: tabular-nums; }
.dc-reactor-meta { font-size: 11px; color: var(--text-2); line-height: 1.5; }
.dc-status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.dc-actions {
  display: flex; gap: 8px; margin-top: 6px;
}
.dc-btn {
  flex: 1;
  padding: 9px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-1);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 12px; font-weight: 500;
  text-decoration: none; text-align: center;
  transition: background 0.15s, border-color 0.15s;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.dc-btn:hover { background: rgba(95, 214, 207,0.1); border-color: var(--accent); color: var(--accent); }
.dc-btn svg { width: 14px; height: 14px; }

.dc-disclosure {
  margin-top: 14px;
  padding: 8px 10px;
  background: rgba(251, 191, 36, 0.06);
  border: 1px solid rgba(251, 191, 36, 0.2);
  color: #fcd34d;
  font-size: 11px;
  border-radius: 6px;
  font-family: var(--font-mono);
}

/* ---------- Loading ---------- */
.loading {
  position: absolute; inset: 0;
  background: var(--bg-0);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s;
}
.loading.hidden { opacity: 0; pointer-events: none; }
.loading-inner { text-align: center; }
.loading-spinner { filter: drop-shadow(0 0 12px var(--accent-glow)); }
.loading-text {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-2);
  letter-spacing: 0.05em;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  #sidebar { width: calc(100vw - 36px); max-width: 340px; }
  .detail-card { width: calc(100vw - 36px); max-width: 380px; top: auto; bottom: 18px; height: 60vh; }
  .toolbar { top: auto; bottom: 18px; right: 18px; left: 18px; flex-direction: column; align-items: stretch; }
  .live-indicator { display: none; }
  #search { width: 100%; }
  .search-wrap { flex: 1; }
}