/* ============================================================
   SCAN A SIGNAL — design system
   Mirrors GROUND ASSETS NETWORK tokens (deep-space + gold + cyan).
   ============================================================ */

:root {
  --ss-bg:        #05070A;
  --ss-bg-2:      #0A0F18;
  --ss-bg-3:      #0E1623;
  --ss-text:      #E8F1FF;
  --ss-text-dim:  #8FA0BC;
  --ss-text-mute: #4A5568;
  --ss-border:    rgba(140, 170, 220, 0.10);
  --ss-border-2:  rgba(140, 170, 220, 0.22);
  --ss-gold:      #D4AF37;
  --ss-gold-soft: rgba(212, 175, 55, 0.20);
  --ss-gold-glow: rgba(212, 175, 55, 0.55);
  --ss-cyan:      #00E5FF;
  --ss-cyan-soft: rgba(0, 229, 255, 0.18);
  --ss-cyan-glow: rgba(0, 229, 255, 0.55);
  --ss-white:     #FFFFFF;
  --ss-red:       #FF4D5E;
  --ss-amber:     #F5A524;
  --ss-green:     #38E07B;
  --ss-grid:      rgba(140, 170, 220, 0.04);

  --ss-mono: 'JetBrains Mono', 'IBM Plex Mono', 'Roboto Mono', ui-monospace,
             'SFMono-Regular', Menlo, Consolas, monospace;
  --ss-sans: 'Inter', -apple-system, 'Segoe UI', system-ui, sans-serif;

  --ss-radius: 2px;
  --ss-radius-lg: 4px;
}

/* Reset (scoped) */
.ss-app, .ss-app * { box-sizing: border-box; }
.ss-app {
  margin: 0;
  background: var(--ss-bg);
  color: var(--ss-text);
  font-family: var(--ss-sans);
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Atmosphere — star field + scan grid + gold/cyan flares */
.ss-app::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 18% 10%, rgba(212,175,55,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 95%, rgba(0,229,255,0.05) 0%, transparent 60%),
    linear-gradient(0deg, transparent 95%, var(--ss-grid) 100%) 0 0/100% 32px,
    linear-gradient(90deg, transparent 95%, var(--ss-grid) 100%) 0 0/32px 100%;
  z-index: 0;
}

/* ── Layout grid ─────────────────────────────────────────────────── */
.ss-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: 60px auto 1fr;
  grid-template-columns: 1fr 380px;
  min-height: 100vh;
}

/* ── Header ──────────────────────────────────────────────────────── */
.ss-header {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 22px;
  border-bottom: 1px solid var(--ss-border-2);
  background: linear-gradient(180deg, rgba(14,22,35,0.85) 0%, rgba(5,7,10,0.0) 100%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 50;
}
.ss-brand { display: flex; align-items: baseline; gap: 14px; }
.ss-brand-mark {
  font-family: var(--ss-mono);
  font-size: 11px;
  letter-spacing: 3.2px;
  color: var(--ss-gold);
  text-transform: uppercase;
}
.ss-brand-mark::before {
  content: "◇";
  margin-right: 8px;
  color: var(--ss-gold);
  opacity: 0.8;
}
.ss-brand-title {
  font-family: var(--ss-sans);
  font-size: 13px;
  letter-spacing: 4.5px;
  color: var(--ss-text);
  text-transform: uppercase;
  font-weight: 500;
}
.ss-brand-divider {
  color: var(--ss-text-mute);
  font-family: var(--ss-mono);
  letter-spacing: 4px;
}
.ss-header-spacer { flex: 1; }

.ss-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--ss-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--ss-cyan);
  padding: 4px 10px;
  border: 1px solid var(--ss-cyan-soft);
  background: rgba(0, 229, 255, 0.05);
  text-transform: uppercase;
}
.ss-live-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ss-cyan);
  box-shadow: 0 0 8px var(--ss-cyan);
  animation: ss-pulse-dot 1.6s infinite;
}
.ss-utc {
  font-family: var(--ss-mono);
  font-size: 11px;
  color: var(--ss-text-dim);
  letter-spacing: 1.8px;
  font-variant-numeric: tabular-nums;
}
.ss-lang {
  display: inline-flex;
  border: 1px solid var(--ss-border-2);
  font-family: var(--ss-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  overflow: hidden;
}
.ss-lang button {
  background: transparent;
  color: var(--ss-text-dim);
  border: 0;
  padding: 4px 9px;
  cursor: pointer;
  font-family: inherit; font-size: inherit; letter-spacing: inherit;
  transition: color .2s, background .2s;
}
.ss-lang button.active { color: var(--ss-bg); background: var(--ss-gold); }
.ss-lang button:hover:not(.active) { color: var(--ss-text); }

/* ── Tabs ────────────────────────────────────────────────────────── */
.ss-tabs {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  gap: 0;
  padding: 0 22px;
  border-bottom: 1px solid var(--ss-border);
  background: rgba(5, 7, 10, 0.80);
  position: sticky;
  top: 0;
  z-index: 40;
}
.ss-tab {
  font-family: var(--ss-mono);
  font-size: 11px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  padding: 14px 22px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--ss-text-dim);
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
  display: inline-flex; align-items: center; gap: 8px;
}
.ss-tab:hover { color: var(--ss-text); }
.ss-tab.active {
  color: var(--ss-gold);
  border-bottom-color: var(--ss-gold);
  background: linear-gradient(180deg, rgba(212,175,55,0.05) 0%, transparent 100%);
}
.ss-tab .ss-tab-icon { font-size: 14px; }
.ss-tab-arrow { color: var(--ss-cyan); margin-left: 4px; opacity: 0.7; }

/* ── Stats bar ───────────────────────────────────────────────────── */
.ss-stats-bar {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  padding: 10px 22px;
  border-bottom: 1px solid var(--ss-border);
  background: rgba(10, 15, 24, 0.55);
  font-family: var(--ss-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ss-text-dim);
}
.ss-stat {
  display: inline-flex; align-items: center; gap: 8px;
}
.ss-stat .ss-stat-val {
  color: var(--ss-text);
  font-weight: 600;
  letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
}
.ss-stat .ss-stat-pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ss-cyan);
  box-shadow: 0 0 8px var(--ss-cyan);
  animation: ss-pulse-dot 1.6s infinite;
}
.ss-stat .ss-stat-pulse.gold { background: var(--ss-gold); box-shadow: 0 0 8px var(--ss-gold); }

/* ── Main area ───────────────────────────────────────────────────── */
.ss-main {
  grid-column: 1;
  grid-row: 3;
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--ss-border-2);
}

/* Search box */
.ss-search-area {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: linear-gradient(180deg, rgba(14,22,35,0.55) 0%, transparent 100%);
  border-bottom: 1px solid var(--ss-border);
}
.ss-search-box {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.ss-input-wrap {
  position: relative;
  flex: 1;
}
.ss-input-wrap::before, .ss-input-wrap::after {
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border: 1px solid var(--ss-gold);
  pointer-events: none;
}
.ss-input-wrap::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.ss-input-wrap::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.ss-input {
  width: 100%;
  background: rgba(5,7,10,0.85);
  border: 1px solid var(--ss-border-2);
  color: var(--ss-text);
  font-family: var(--ss-mono);
  font-size: 13px;
  letter-spacing: 1px;
  padding: 14px 18px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.ss-input:focus {
  border-color: var(--ss-gold);
  box-shadow: 0 0 0 1px var(--ss-gold-soft), 0 0 24px rgba(212,175,55,0.12);
}
.ss-input::placeholder { color: var(--ss-text-mute); }
.ss-input.pulsing { animation: ss-input-pulse 0.9s ease-out; }

.ss-btn {
  font-family: var(--ss-mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 0 22px;
  background: rgba(212,175,55,0.10);
  border: 1px solid var(--ss-gold);
  color: var(--ss-gold);
  cursor: pointer;
  transition: background .15s, color .15s, transform .1s;
  white-space: nowrap;
}
.ss-btn:hover { background: var(--ss-gold); color: var(--ss-bg); }
.ss-btn:active { transform: translateY(1px); }
.ss-btn.busy { pointer-events: none; opacity: 0.7; }
.ss-btn.cyan { color: var(--ss-cyan); border-color: var(--ss-cyan); background: rgba(0,229,255,0.08); }
.ss-btn.cyan:hover { background: var(--ss-cyan); color: var(--ss-bg); }
.ss-btn.ghost { background: transparent; color: var(--ss-text-dim); border-color: var(--ss-border-2); }
.ss-btn.ghost:hover { color: var(--ss-text); border-color: var(--ss-text-dim); background: rgba(255,255,255,0.04); }

/* Search results dropdown */
.ss-search-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: rgba(10,15,24,0.97);
  border: 1px solid var(--ss-border-2);
  max-height: 320px;
  overflow-y: auto;
  z-index: 30;
  display: none;
  box-shadow: 0 14px 32px rgba(0,0,0,0.5);
}
.ss-search-dropdown.visible { display: block; }
.ss-search-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px;
  font-family: var(--ss-mono);
  font-size: 12px;
  color: var(--ss-text);
  border-bottom: 1px solid var(--ss-border);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.ss-search-row:hover { background: rgba(212,175,55,0.08); color: var(--ss-gold); }
.ss-search-row .ss-row-norad {
  color: var(--ss-text-mute);
  font-size: 10px;
  letter-spacing: 1.2px;
}
.ss-search-row.more {
  color: var(--ss-text-mute);
  cursor: default;
  font-style: italic;
  justify-content: center;
}
.ss-search-row.more:hover { background: transparent; color: var(--ss-text-mute); }

/* Popular targets */
.ss-popular {
  display: flex; flex-direction: column; gap: 10px;
}
.ss-popular-label {
  font-family: var(--ss-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  color: var(--ss-text-mute);
  text-transform: uppercase;
}
.ss-popular-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ss-chip {
  font-family: var(--ss-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  padding: 7px 12px;
  background: rgba(14,22,35,0.6);
  border: 1px solid var(--ss-border-2);
  color: var(--ss-text-dim);
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s, transform .1s;
  display: inline-flex; align-items: center; gap: 7px;
}
.ss-chip:hover {
  color: var(--ss-gold);
  border-color: var(--ss-gold);
  background: rgba(212,175,55,0.08);
}
.ss-chip:active { transform: translateY(1px); }
.ss-chip .ss-chip-icon { font-size: 13px; }
.ss-chip.disabled { opacity: 0.5; cursor: not-allowed; }

/* Map area */
.ss-map-wrap {
  flex: 1;
  position: relative;
  background: var(--ss-bg-2);
  min-height: 480px;
}
#ss-map {
  width: 100%;
  height: 100%;
  background: var(--ss-bg-2);
  filter: saturate(0.85);
}
.ss-map-loader {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ss-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--ss-text-dim);
  background: var(--ss-bg-2);
  z-index: 5;
  transition: opacity .35s ease;
}
.ss-map-loader.fade { opacity: 0; pointer-events: none; }

/* Leaflet overrides — dark, minimal */
.leaflet-container { background: var(--ss-bg-2); font-family: var(--ss-mono); }
.leaflet-control-attribution {
  background: rgba(5,7,10,0.7) !important;
  color: var(--ss-text-mute) !important;
  font-size: 9px !important;
  font-family: var(--ss-mono) !important;
}
.leaflet-control-attribution a { color: var(--ss-text-dim) !important; }
.leaflet-control-zoom a {
  background: rgba(14,22,35,0.85) !important;
  color: var(--ss-text) !important;
  border: 1px solid var(--ss-border-2) !important;
}

/* Satellite marker SVG container */
.ss-sat-marker {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.ss-sat-marker .core {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--ss-gold);
  box-shadow:
    0 0 0 2px rgba(212,175,55,0.40),
    0 0 14px rgba(212,175,55,0.85);
}
.ss-sat-marker::before {
  content: "";
  position: absolute;
  width: 28px; height: 28px;
  border: 1px solid var(--ss-gold);
  border-radius: 50%;
  opacity: 0.6;
  animation: ss-sat-halo 2.4s ease-out infinite;
}
.ss-sat-marker::after {
  content: "";
  position: absolute;
  width: 44px; height: 44px;
  border: 1px solid var(--ss-gold-soft);
  border-radius: 50%;
  opacity: 0.4;
  animation: ss-sat-halo 2.4s ease-out infinite 1.0s;
}

.ss-obs-marker {
  width: 14px; height: 14px;
  display: flex; align-items: center; justify-content: center;
}
.ss-obs-marker .core {
  width: 7px; height: 7px;
  background: var(--ss-cyan);
  border: 1px solid var(--ss-cyan);
  transform: rotate(45deg);
  box-shadow: 0 0 8px var(--ss-cyan);
}
.ss-obs-marker.home .core {
  background: var(--ss-gold);
  border-color: var(--ss-gold);
  box-shadow: 0 0 10px var(--ss-gold);
}

/* Antenna link line - flow effect */
.ss-link-line {
  stroke: var(--ss-cyan);
  stroke-width: 1.4;
  fill: none;
  stroke-dasharray: 6 6;
  animation: ss-link-flow 1.6s linear infinite;
  filter: drop-shadow(0 0 4px var(--ss-cyan-soft));
}
.ss-link-line.weak {
  stroke: var(--ss-amber);
  filter: drop-shadow(0 0 3px rgba(245,165,36,0.30));
}
.ss-link-line.marginal {
  stroke: var(--ss-text-mute);
  filter: none;
}

/* Ground track polyline (legacy — unused by vessel module) */
.ss-track-line {
  stroke: var(--ss-gold);
  stroke-width: 1.6;
  stroke-dasharray: 3 4;
  fill: none;
  opacity: 0.7;
}

/* Vessel marker — cyan triangle, oriented by COG/heading */
.ss-vessel-marker {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  color: var(--ss-cyan);
}
.ss-vessel-marker .core {
  display: flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  filter: drop-shadow(0 0 6px var(--ss-cyan-soft));
  transition: transform 0.6s ease-out;
}
.ss-vessel-marker::before {
  content: "";
  position: absolute;
  width: 28px; height: 28px;
  border: 1px solid var(--ss-cyan);
  border-radius: 50%;
  opacity: 0.55;
  animation: ss-sat-halo 2.4s ease-out infinite;
}
.ss-vessel-marker::after {
  content: "";
  position: absolute;
  width: 44px; height: 44px;
  border: 1px solid var(--ss-cyan-soft);
  border-radius: 50%;
  opacity: 0.35;
  animation: ss-sat-halo 2.4s ease-out infinite 1.0s;
}

/* Recent-vessels grid hints */
.ss-popular-empty {
  font-size: 12px;
  color: var(--ss-text-dim);
  font-style: italic;
  padding: 8px 4px;
}
.ss-popular-hint {
  font-size: 11px;
  color: var(--ss-text-mute);
  margin-top: 6px;
  letter-spacing: 0.04em;
}

/* Basemap toggle (DARK / SAT) — Leaflet topright control */
.ss-basemap-toggle {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  background: rgba(5, 7, 10, 0.85);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 6px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.ss-basemap-btn {
  background: transparent;
  border: 1px solid transparent;
  color: rgba(232, 236, 245, 0.65);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.ss-basemap-btn:hover {
  color: #00E5FF;
  border-color: rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.06);
}
.ss-basemap-btn.active {
  color: #05070A;
  background: #00E5FF;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
}