/* ============================================================================
   GROUND ZERO — design system
   Dark, serious, terminal. Amber phosphor on near-black. War-memorial restraint.
   ========================================================================== */

:root {
  --bg: #0a0a0a;
  --bg-secondary: #111110;
  --bg-elevated: #161512;
  --text-primary: #ffb000;
  --text-secondary: #cc8800;
  --text-muted: #7a5a14;
  --text-dim: #4d3a0d;
  --accent: #ff6600;
  --border: #2a2008;
  --border-bright: #4a3a10;

  --yield-low: #44dd55;
  --yield-med: #ffb000;
  --yield-high: #ff3b1f;
  --yield-unknown: #5a5a5a;

  --mono: "SFMono-Regular", "JetBrains Mono", "Consolas", "Courier New", monospace;
  --maxw: 1180px;
  --gap: clamp(0.75rem, 2vw, 1.5rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Subtle CRT scanline veil — fixed, non-interactive, reduced-motion safe. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.18) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.5;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--text-primary); text-decoration: underline; }

::selection { background: var(--accent); color: #000; }

img { max-width: 100%; display: block; }

/* ---- Layout ---------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gap); }

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(to bottom, #000, var(--bg));
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(2px);
}
.site-header .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.brand { display: flex; align-items: baseline; gap: 0.7rem; }
.brand a { color: var(--text-primary); text-decoration: none; }
.brand .logo {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  text-shadow: 0 0 12px rgba(255, 176, 0, 0.45);
}
.brand .tagline {
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.nav a {
  color: var(--text-secondary);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--text-primary); text-decoration: none; }
.nav a[aria-current="page"] { border-bottom: 1px solid var(--accent); }

main { flex: 1 0 auto; padding: clamp(1.5rem, 4vw, 3rem) 0; }

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 1.5rem 0;
  margin-top: 2rem;
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; justify-content: space-between; }
.site-footer a { color: var(--text-secondary); }

/* ---- Typographic primitives ----------------------------------------------- */
h1, h2, h3 { font-weight: 700; line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: clamp(1.6rem, 5vw, 2.8rem); letter-spacing: 0.04em; }
h2 { font-size: clamp(1.2rem, 3vw, 1.6rem); letter-spacing: 0.03em; }
h3 { font-size: 1.05rem; }

.section-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin: 2.4rem 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.lede { color: var(--text-secondary); font-size: 1.02rem; max-width: 62ch; }
.muted { color: var(--text-muted); }
.dim { color: var(--text-dim); }
.prose p { max-width: 70ch; color: var(--text-secondary); }
.prose p + p { margin-top: 0.9rem; }

.crumbs { font-size: 0.78rem; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 1.2rem; text-transform: uppercase; }
.crumbs a { color: var(--text-secondary); }

/* ---- Badges ---------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.18em 0.6em;
  border: 1px solid var(--border-bright);
  border-radius: 2px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.badge.yield { border-color: currentColor; }
.badge.low { color: var(--yield-low); }
.badge.med { color: var(--yield-med); }
.badge.high { color: var(--yield-high); }
.badge.unknown { color: var(--yield-unknown); }
.dot { width: 0.6em; height: 0.6em; border-radius: 50%; background: currentColor; display: inline-block; }

/* ---- Cards & grids --------------------------------------------------------- */
.grid { display: grid; gap: var(--gap); }
.grid.cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid.ops { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.6);
}
.card a { color: inherit; text-decoration: none; display: flex; flex-direction: column; height: 100%; }
.card .thumb {
  aspect-ratio: 4 / 3;
  background: #000 center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  position: relative;
  filter: saturate(0.55) contrast(1.05);
}
.card:hover .thumb { filter: saturate(0.85) contrast(1.1); }
.card .thumb .ovl {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.5rem 0.7rem;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 0.5rem;
}
.card .body { padding: 0.85rem 0.95rem 1rem; display: flex; flex-direction: column; gap: 0.4rem; flex: 1; }
.card .title { color: var(--text-primary); font-size: 0.98rem; line-height: 1.3; font-weight: 700; }
.card .meta { color: var(--text-muted); font-size: 0.76rem; letter-spacing: 0.04em; margin-top: auto; }

/* ---- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.6em 1.1em;
  border: 1px solid var(--border-bright);
  background: transparent;
  color: var(--text-primary);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--text-primary); color: #000; text-decoration: none; border-color: var(--text-primary); }
.btn.accent { border-color: var(--accent); color: var(--accent); }
.btn.accent:hover { background: var(--accent); color: #000; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.2rem 0; }

/* ---- Hero (home) ----------------------------------------------------------- */
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(1rem, 4vw, 2.5rem); align-items: stretch; }
.hero-title h1 { text-shadow: 0 0 30px rgba(255, 176, 0, 0.35); }
.hero-title .sub { color: var(--text-secondary); letter-spacing: 0.18em; text-transform: uppercase; font-size: 0.82rem; }
.hero-film {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.hero-film .thumb { aspect-ratio: 16 / 9; background: #000 center/cover no-repeat; filter: saturate(0.6) contrast(1.05); }
.hero-film .body { padding: 1rem 1.1rem 1.2rem; }

/* The yield bar — Hiroshima equivalence made visceral. */
.yieldbar { margin: 1.4rem 0; }
.yieldbar .n { font-size: clamp(1.8rem, 6vw, 3rem); font-weight: 700; line-height: 1; text-shadow: 0 0 24px rgba(255,176,0,0.35); }
.yieldbar .track { height: 10px; background: var(--bg-elevated); border: 1px solid var(--border); margin: 0.6rem 0; border-radius: 2px; overflow: hidden; }
.yieldbar .fill { height: 100%; background: linear-gradient(90deg, var(--yield-med), var(--yield-high)); box-shadow: 0 0 12px rgba(255,59,31,0.5); }
.yieldbar .cap { color: var(--text-secondary); font-size: 0.85rem; }

/* ---- Stat strip ------------------------------------------------------------ */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 3px; overflow: hidden; }
.stat { background: var(--bg-secondary); padding: 1rem 1.1rem; }
.stat .k { color: var(--text-muted); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; }
.stat .v { font-size: clamp(1.3rem, 4vw, 1.9rem); font-weight: 700; line-height: 1.1; margin-top: 0.3rem; }
.stat .v.count { color: var(--accent); }

/* The somber centerpiece counter. */
.counter { text-align: center; padding: 1.4rem 0; }
.counter .days { font-size: clamp(2.4rem, 9vw, 4.5rem); font-weight: 700; letter-spacing: 0.02em; text-shadow: 0 0 30px rgba(255,176,0,0.3); }
.counter .label { color: var(--text-secondary); letter-spacing: 0.16em; text-transform: uppercase; font-size: 0.8rem; }

/* ---- Operation badge grid (home) ------------------------------------------ */
.op-badges { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.op-badges a {
  border: 1px solid var(--border-bright);
  border-radius: 2px;
  padding: 0.5em 0.85em;
  color: var(--text-secondary);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  display: inline-flex;
  gap: 0.5em;
  align-items: center;
}
.op-badges a:hover { background: var(--bg-secondary); color: var(--text-primary); text-decoration: none; border-color: var(--text-primary); }
.op-badges .yr { color: var(--text-dim); font-size: 0.72rem; }

/* ---- Detail tables --------------------------------------------------------- */
.detail-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(1.2rem, 4vw, 2.5rem); align-items: start; }
.player {
  aspect-ratio: 16 / 9;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #000;
  overflow: hidden;
}
.player iframe { width: 100%; height: 100%; border: 0; display: block; }

dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.1rem; margin: 0; font-size: 0.9rem; }
dl.kv dt { color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.74rem; padding-top: 0.15rem; }
dl.kv dd { margin: 0; color: var(--text-secondary); }
dl.kv dd strong { color: var(--text-primary); }

.panel { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 3px; padding: 1.1rem 1.2rem; }
.panel + .panel { margin-top: 1rem; }

.aftermath { border-left: 2px solid var(--yield-high); padding-left: 1rem; }
.aftermath .section-label { margin-top: 0; color: var(--yield-high); }
.aftermath .section-label::after { display: none; }

/* ---- Controls (sort/filter on browse pages) ------------------------------- */
.controls { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; align-items: center; margin-bottom: 1.4rem; }
.controls label { color: var(--text-muted); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; }
.controls select, .controls input {
  font-family: var(--mono);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-bright);
  border-radius: 2px;
  padding: 0.45em 0.7em;
  font-size: 0.85rem;
}
.controls select:focus, .controls input:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
.count-readout { color: var(--text-muted); font-size: 0.78rem; margin-left: auto; }

/* ---- Map & timeline -------------------------------------------------------- */
#map { width: 100%; height: min(72vh, 680px); border: 1px solid var(--border); border-radius: 3px; background: #000; }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border-bright); box-shadow: 0 4px 20px rgba(0,0,0,0.7); }
.leaflet-popup-content { font-family: var(--mono); font-size: 0.82rem; margin: 0.7rem 0.9rem; }
.leaflet-popup-content a { color: var(--accent); }
.leaflet-container a.leaflet-popup-close-button { color: var(--text-muted); }
.leaflet-control-zoom a { background: var(--bg-elevated) !important; color: var(--text-primary) !important; border-color: var(--border-bright) !important; }
.leaflet-bar { border-color: var(--border-bright) !important; }
.map-legend { background: rgba(10,10,10,0.92); border: 1px solid var(--border-bright); border-radius: 3px; padding: 0.7rem 0.85rem; font-size: 0.74rem; line-height: 1.7; color: var(--text-secondary); }
.map-legend .row { display: flex; align-items: center; gap: 0.5rem; }

.chart-wrap { position: relative; width: 100%; }
#timeline { width: 100%; height: min(64vh, 560px); display: block; border: 1px solid var(--border); border-radius: 3px; background: var(--bg-secondary); }
.chart-tip {
  position: absolute;
  pointer-events: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: 3px;
  padding: 0.5rem 0.65rem;
  font-size: 0.78rem;
  color: var(--text-primary);
  box-shadow: 0 4px 18px rgba(0,0,0,0.7);
  opacity: 0;
  transition: opacity 0.1s;
  max-width: 240px;
  z-index: 5;
}
.legend-keys { display: flex; flex-wrap: wrap; gap: 0.4rem 0.9rem; margin-top: 1rem; font-size: 0.74rem; color: var(--text-muted); }
.legend-keys .k { display: inline-flex; align-items: center; gap: 0.4rem; }
.legend-keys .sw { width: 0.7rem; height: 0.7rem; border-radius: 50%; }

/* ---- Utility --------------------------------------------------------------- */
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 0.5rem; z-index: 10000; background: var(--accent); color: #000; padding: 0.5rem 0.9rem; }
.empty { color: var(--text-muted); padding: 2rem 0; text-align: center; }
.spinner { color: var(--text-muted); padding: 2rem 0; text-align: center; letter-spacing: 0.2em; }

/* ---- Responsive ------------------------------------------------------------ */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .nav { gap: 0.8rem; font-size: 0.72rem; }
  .brand .tagline { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
  .card:hover { transform: none; }
}