/* ————————————————————————————————————————————————
   KARL — the San Francisco Fog
   vintage field-guide ✕ instrument panel
   ink on fog-cream, International Orange accents
———————————————————————————————————————————————— */

:root {
  --ink: #16222c;
  --ink-soft: rgba(22, 34, 44, 0.62);
  --paper: rgba(245, 243, 236, 0.88);
  --paper-solid: #f5f3ec;
  --line: rgba(22, 34, 44, 0.25);
  --orange: #e8500f;          /* International Orange, borrowed from the bridge */
  --orange-soft: rgba(232, 80, 15, 0.14);
  --disp: "Fraunces", georgia, serif;
  --mono: "Spline Sans Mono", ui-monospace, monospace;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: #8fa3b3;
  color: var(--ink);
  font-family: var(--mono);
  -webkit-font-smoothing: antialiased;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}
#scene:active { cursor: grabbing; }

/* film grain over everything */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hidden { display: none !important; }
.off { display: none !important; }

/* ——— panels ——— */
.panel {
  position: absolute;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  backdrop-filter: blur(12px) saturate(1.15);
  -webkit-backdrop-filter: blur(12px) saturate(1.15);
  box-shadow: 0 14px 44px rgba(8, 18, 28, 0.22), 0 1px 0 rgba(255,255,255,0.5) inset;
  z-index: 10;
}

#hud { position: fixed; inset: 0; pointer-events: none; z-index: 10; }
#hud > * { pointer-events: auto; }

/* ——— brand block, top-left ——— */
#brand {
  top: 20px;
  left: 20px;
  padding: 16px 20px 14px;
  max-width: 330px;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.1s both;
}
.brand-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}
#brand h1 {
  font-family: var(--disp);
  font-style: italic;
  font-weight: 540;
  font-size: clamp(44px, 5.4vw, 62px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 100;
}
#brand h1::first-letter { color: var(--orange); }
.tagline {
  margin-top: 9px;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
}
.hint {
  margin-top: 5px;
  font-size: 10px;
  font-style: italic;
  color: var(--ink-soft);
  font-family: var(--disp);
  font-size: 12px;
}

.brand-chips { display: flex; gap: 6px; flex-direction: column; align-items: flex-end; }

.chip {
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 3px 7px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,0.4);
}
.chip-live { border-color: var(--orange); color: var(--orange); background: var(--orange-soft); }
.chip-live .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--orange);
  animation: pulse 2.2s ease-in-out infinite;
}
.chip-fc { border-color: var(--ink-soft); color: var(--ink-soft); }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.25; } }
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

/* ——— readouts, top-right ——— */
#readout {
  top: 20px;
  right: 20px;
  display: flex;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.25s both;
}
#readout .cell {
  padding: 13px 18px 11px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-left: 1px solid var(--line);
  min-width: 86px;
}
#readout .cell:first-child { border-left: none; }
#readout .num { font-size: 21px; font-weight: 600; line-height: 1; }
#readout .num b { font-weight: 600; }
#readout .num small { font-size: 10px; font-weight: 400; color: var(--ink-soft); margin-left: 2px; }
#readout label {
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
#readout .cell:first-child .num b { color: var(--orange); }

/* ——— viewpoint buttons, right edge ——— */
#views {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.4s both;
}
.views-label {
  font-size: 8.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(245,243,236,0.85);
  text-shadow: 0 1px 6px rgba(10,20,30,0.5);
  margin-bottom: 2px;
}

.ghost-btn {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 7px 11px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.ghost-btn:hover { background: var(--ink); color: var(--paper-solid); border-color: var(--ink); }
.ghost-btn.on { background: var(--orange); border-color: var(--orange); color: #fff; }

.credit {
  margin-top: 7px;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.credit a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  transition: color 0.15s;
}
.credit a:hover { color: var(--orange); }

#foghorn { margin-top: 12px; }

/* ——— caption, bottom-left ——— */
#caption {
  position: absolute;
  left: 24px;
  bottom: 178px;
  max-width: 340px;
  display: flex;
  gap: 10px;
  align-items: baseline;
  z-index: 9;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.55s both;
}
.caption-dash {
  flex: 0 0 26px;
  height: 2px;
  background: var(--orange);
  transform: translateY(-5px);
}
#caption em {
  font-family: var(--disp);
  font-style: italic;
  font-weight: 480;
  font-size: 21px;
  line-height: 1.25;
  color: #fdfcf8;
  text-shadow: 0 1px 3px rgba(8,18,28,0.55), 0 6px 28px rgba(8,18,28,0.45);
  transition: opacity 0.5s;
}

/* ——— timeline, bottom center ——— */
#timeline {
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: min(860px, calc(100vw - 40px));
  padding: 12px 16px 9px;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.7s both;
}
.tl-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.play-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: none;
  background: var(--orange);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.15s, background 0.15s;
  box-shadow: 0 4px 14px rgba(232, 80, 15, 0.4);
}
.play-btn:hover { transform: scale(1.07); }
.play-btn svg { width: 16px; height: 16px; fill: #fff; }

.tl-time {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 9px;
}
.tl-time b { font-size: 20px; font-weight: 600; }
.tl-time span#tl-day {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

#chart {
  display: block;
  width: 100%;
  height: 74px;
  cursor: ew-resize;
  touch-action: none;
}
.tl-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 8.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.tl-foot i { font-style: normal; }

/* ——— loading ——— */
#loading {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 90% at 50% 110%, #dde4e7 0%, rgba(221,228,231,0) 55%),
    linear-gradient(180deg, #93a9ba 0%, #b9c8d2 55%, #d8dee1 100%);
  transition: opacity 0.9s ease;
}
#loading.gone { opacity: 0; pointer-events: none; }
.load-inner { text-align: center; }
.load-karl {
  font-family: var(--disp);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(72px, 14vw, 150px);
  color: #243442;
  letter-spacing: 0.02em;
  animation: breathe 3s ease-in-out infinite;
}
.load-sub {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(36, 52, 66, 0.65);
  margin-top: 10px;
}
@keyframes breathe {
  0%, 100% { opacity: 0.55; letter-spacing: 0.02em; }
  50% { opacity: 1; letter-spacing: 0.05em; }
}

#webgl-fail {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: grid;
  place-items: center;
  background: #1a2530;
  color: #e7ecef;
  font-family: var(--disp);
  font-style: italic;
  font-size: 22px;
  text-align: center;
  line-height: 1.6;
}

/* ——— small screens ——— */
@media (max-width: 820px) {
  #brand { max-width: 250px; padding: 12px 14px 11px; }
  #brand h1 { font-size: 38px; }
  .hint { display: none; }
  #readout { top: auto; bottom: 196px; right: 12px; left: auto; }
  #readout .cell { padding: 9px 11px 8px; min-width: 64px; }
  #readout .num { font-size: 16px; }
  #views { display: none; }
  #caption { bottom: 196px; left: 14px; max-width: 200px; }
  #caption em { font-size: 16px; }
  #timeline { bottom: 10px; width: calc(100vw - 20px); }
  .tl-time b { font-size: 16px; }
}