/* ai-presence — viral civic awareness piece.
   priorities:
   1. mobile-first, BIG readable type, no squinting
   2. matrix-flavored opener with green code rain
   3. scarce bright color — most surface near-black
   4. live trending callouts on hot hubs
*/

:root {
  --bg: #03060c;
  --bg-deep: #000003;
  --text: #f4ede1;
  --text-dim: rgba(244, 237, 225, 0.62);
  --text-faint: rgba(244, 237, 225, 0.32);
  --rule: rgba(244, 237, 225, 0.14);

  --models: #ff9a3c;
  --code: #4a90b8;
  --inference: #c2410c;
  --historical: #6b7c8c;

  --matrix-green: #00ff66;
  --matrix-glow: rgba(0, 255, 102, 0.55);
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  overflow: hidden;
  height: 100%;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { user-select: none; -webkit-user-select: none; touch-action: manipulation; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* ======================================================
   MATRIX CODE RAIN (canvas behind opener)
   ====================================================== */
#matrix-rain {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.6s ease;
  background: transparent;
}

#matrix-rain.live { opacity: 1; }
#matrix-rain.ambient { opacity: 0.18; }
#matrix-rain.gone { opacity: 0; }

/* ======================================================
   OPENER — BIG, mean, mobile-first
   ====================================================== */
#opener {
  position: fixed;
  inset: 0;
  /* transparent so matrix rain (z 90) shows through; vignette adds focus */
  background: radial-gradient(ellipse at center, rgba(0, 0, 3, 0.55) 0%, rgba(0, 0, 3, 0.85) 70%, rgba(0, 0, 3, 0.95) 100%);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 1.4s ease-in-out, background 1.4s ease;
  padding: 5vh 6vw;
}

#opener.fading { opacity: 0; pointer-events: none; }
#opener.gone { display: none; }

.opener-line {
  position: absolute;
  font-weight: 200;
  letter-spacing: -0.01em;
  line-height: 1.15;
  text-align: center;
  max-width: 100%;
  width: 100%;
  padding: 0 5vw;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1.2s ease, transform 1.2s ease;
  color: var(--text);
  font-size: clamp(2.2rem, 8.5vw, 5.5rem);
}

.opener-line.visible {
  opacity: 1;
  transform: translateY(0);
}

.opener-line.fade {
  opacity: 0;
  transform: translateY(-10px);
}

.opener-line[data-line="1"] {
  font-style: italic;
  font-weight: 300;
  letter-spacing: -0.02em;
}

.opener-line .quote-mark {
  color: var(--matrix-green);
  text-shadow: 0 0 18px var(--matrix-glow);
  font-weight: 300;
  font-style: normal;
  margin: 0 0.05em;
}

.opener-attr {
  margin-top: 1.4rem;
  font-size: clamp(0.7rem, 2.4vw, 0.95rem);
  font-style: normal;
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--matrix-green);
  text-shadow: 0 0 12px var(--matrix-glow);
  opacity: 0.85;
}

.opener-line .dim-line {
  color: var(--text-dim);
  font-style: italic;
}

.opener-line .accent {
  color: var(--matrix-green);
  font-weight: 300;
  text-shadow: 0 0 18px var(--matrix-glow);
}

.opener-line .opener-sub {
  margin-top: 1.2rem;
  font-size: clamp(0.75rem, 2.6vw, 1rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 300;
}

.opener-line[data-line="5"] {
  font-size: clamp(3rem, 11vw, 7rem);
  font-weight: 200;
  letter-spacing: 0;
}

#skip-hint {
  position: absolute;
  bottom: max(2rem, env(safe-area-inset-bottom, 1rem));
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--matrix-green);
  text-shadow: 0 0 8px var(--matrix-glow);
  opacity: 0;
  animation: fadeInLate 1.2s ease 5s forwards;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

@keyframes fadeInLate { to { opacity: 0.7; } }

/* ======================================================
   GLOBE
   ====================================================== */
#globeViz {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  z-index: 1;
}

/* ======================================================
   TRENDING HOT-ZONE CALLOUTS
   ====================================================== */
#trending {
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
}

.trend-label {
  position: absolute;
  transform: translate(-50%, -100%);
  white-space: nowrap;
  pointer-events: none;
  font-size: clamp(0.85rem, 2.7vw, 1.05rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.6em 1em;
  background: rgba(0, 18, 9, 0.92);
  border: 2px solid var(--matrix-green);
  color: var(--matrix-green);
  text-shadow: 0 0 8px var(--matrix-glow);
  box-shadow:
    0 0 28px rgba(0, 255, 102, 0.5),
    inset 0 0 14px rgba(0, 255, 102, 0.15);
  opacity: 0;
  transition: opacity 0.7s ease;
  font-weight: 500;
}

.trend-label.visible {
  opacity: 1;
  animation: trendPulse 2.4s ease-in-out infinite;
}

@keyframes trendPulse {
  0%, 100% { box-shadow: 0 0 24px rgba(0, 255, 102, 0.4), inset 0 0 12px rgba(0, 255, 102, 0.12); }
  50%      { box-shadow: 0 0 38px rgba(0, 255, 102, 0.7), inset 0 0 18px rgba(0, 255, 102, 0.25); }
}

.trend-label::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--matrix-green);
  filter: drop-shadow(0 0 4px var(--matrix-glow));
}

.trend-label .arrow {
  color: #fff;
  margin: 0 0.4em;
  font-weight: 700;
  text-shadow: 0 0 6px var(--matrix-glow);
}

.trend-label .count {
  color: #fff;
  margin-left: 0.5em;
  font-weight: 700;
  font-size: 1.2em;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 8px var(--matrix-glow);
}

@media (max-width: 600px) {
  .trend-label { font-size: 0.78rem; padding: 0.5em 0.85em; }
}

/* ======================================================
   YEAR FLASH — fires at inflection moments during timeline
   ====================================================== */
#year-flash {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  text-align: center;
  padding: 5vh 5vw;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
  background: radial-gradient(ellipse at center, rgba(0, 0, 3, 0.45) 0%, rgba(0, 0, 3, 0) 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
}

#year-flash.show { opacity: 1; }

.flash-year {
  font-size: clamp(4rem, 18vw, 10rem);
  font-weight: 100;
  letter-spacing: -0.01em;
  line-height: 1;
  color: #fff;
  font-variant-numeric: tabular-nums;
  text-shadow:
    0 0 32px rgba(0, 255, 102, 0.7),
    0 0 64px rgba(0, 255, 102, 0.35);
  margin-bottom: 1rem;
  transform: scale(0.94);
  opacity: 0;
  transition: transform 0.6s cubic-bezier(.2, .8, .2, 1), opacity 0.5s ease;
}

.flash-event {
  font-size: clamp(0.95rem, 3.4vw, 1.4rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--matrix-green);
  text-shadow: 0 0 12px var(--matrix-glow);
  max-width: 22ch;
  line-height: 1.3;
  opacity: 0;
  transform: translateY(8px);
  transition: transform 0.5s ease, opacity 0.5s ease;
}

#year-flash.show .flash-year { transform: scale(1); opacity: 1; }
#year-flash.show .flash-event { transform: translateY(0); opacity: 1; transition-delay: 0.18s; }

/* ======================================================
   LIVE TICKER — striking centerpiece
   ====================================================== */
#live-ticker {
  position: fixed;
  z-index: 40;
  pointer-events: none;
  top: 38vh;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
  width: max-content;
  max-width: 92vw;
  transition: opacity 1.6s ease;
}

#live-ticker.invisible { opacity: 0; }

.ticker-label-top {
  font-size: clamp(0.66rem, 2vw, 0.78rem);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--matrix-green);
  opacity: 0.78;
  margin-bottom: 0.55rem;
  text-shadow: 0 0 10px var(--matrix-glow);
}

.ticker-num {
  font-size: clamp(3.2rem, 14vw, 7.2rem);
  font-weight: 200;
  letter-spacing: -0.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: #fff;
  text-shadow:
    0 0 24px rgba(0, 255, 102, 0.55),
    0 0 48px rgba(0, 255, 102, 0.3);
  transition: text-shadow 0.2s;
}

.ticker-num.flash {
  text-shadow:
    0 0 32px rgba(0, 255, 140, 0.85),
    0 0 60px rgba(0, 255, 140, 0.5);
}

.ticker-label {
  margin-top: 0.6rem;
  font-size: clamp(0.78rem, 2.4vw, 0.95rem);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0.9;
}

.ticker-cite {
  margin-top: 0.5rem;
  font-size: clamp(0.6rem, 1.6vw, 0.7rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-style: italic;
}

/* ======================================================
   PROVIDER ROTATOR — striking ambient facts
   ====================================================== */
#provider-rotator {
  position: fixed;
  z-index: 40;
  pointer-events: none;
  top: calc(38vh + clamp(7rem, 22vw, 11rem));
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 92vw;
  text-align: center;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
  transition: opacity 1.6s ease;
}

#provider-rotator.invisible { opacity: 0; }

.provider-card {
  border: 1px solid rgba(0, 255, 102, 0.28);
  background: rgba(0, 12, 6, 0.45);
  padding: 0.6rem 1.1rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.provider-card.swapping { opacity: 0; transform: translateY(6px); }

.provider-name {
  font-size: clamp(0.78rem, 2.2vw, 0.9rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #fff;
  text-shadow: 0 0 8px var(--matrix-glow);
  margin-bottom: 0.15rem;
}

.provider-stat {
  font-size: clamp(0.72rem, 2.1vw, 0.82rem);
  color: var(--matrix-green);
  letter-spacing: 0.08em;
  font-weight: 400;
}

.provider-source {
  display: none; /* removed in compact mode — keeps live view clean */
}

@media (max-height: 700px) {
  #live-ticker { top: 32vh; }
  #provider-rotator { top: calc(32vh + clamp(6rem, 20vw, 9rem)); }
}

/* ======================================================
   HUD
   ====================================================== */
#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
  transition: opacity 1.6s ease-in-out;
}

#hud.invisible { opacity: 0; }

/* When live mode owns the view, the corner counter is redundant
   with the big ticker — fade it out so the eye has a single anchor. */
#hud.live-mode #counter {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

#year-block {
  position: absolute;
  top: max(1.2rem, env(safe-area-inset-top, 0.5rem));
  left: 1.4rem;
}

#year-display {
  font-size: clamp(2.8rem, 9vw, 5rem);
  font-weight: 100;
  letter-spacing: -0.01em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

#year-context {
  margin-top: 0.5rem;
  font-size: clamp(0.72rem, 2.2vw, 0.85rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  max-width: 22ch;
  font-weight: 400;
}

#counter {
  position: absolute;
  top: max(1.2rem, env(safe-area-inset-top, 0.5rem));
  right: 1.4rem;
  text-align: right;
  font-size: clamp(0.7rem, 2vw, 0.78rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.counter-line {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 0.55em;
  margin-bottom: 0.45rem;
  color: var(--text-dim);
}

.counter-num {
  color: var(--text);
  font-size: clamp(1.05rem, 3.4vw, 1.3rem);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  min-width: 3.5ch;
  text-align: right;
}

.counter-label { font-size: clamp(0.62rem, 1.8vw, 0.72rem); }

/* ======================================================
   BOTTOM BAR — mobile-first
   ====================================================== */
#bottom-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.1rem 1.4rem max(1.4rem, env(safe-area-inset-bottom, 1rem));
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: linear-gradient(to top, rgba(3, 6, 12, 0.95) 0%, rgba(3, 6, 12, 0.7) 60%, rgba(3, 6, 12, 0));
}

#layers {
  display: flex;
  gap: 0.6rem;
  pointer-events: auto;
  flex-wrap: wrap;
  justify-content: center;
}

.layer-pill {
  display: flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.55em 0.95em;
  border: 1px solid var(--rule);
  font-size: clamp(0.72rem, 2.2vw, 0.82rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  cursor: pointer;
  background: rgba(8, 12, 20, 0.5);
  transition: all 0.2s;
  user-select: none;
}

.layer-pill:hover, .layer-pill:active { color: var(--text); border-color: var(--text-faint); }

.layer-pill input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border: 1px solid var(--text-faint);
  background: transparent;
  cursor: pointer;
  position: relative;
  margin: 0;
  transition: all 0.2s;
  border-radius: 50%;
}

#layers .layer-pill:nth-child(1) input:checked { background: var(--models); border-color: var(--models); box-shadow: 0 0 8px var(--models); }
#layers .layer-pill:nth-child(2) input:checked { background: var(--code); border-color: var(--code); box-shadow: 0 0 8px var(--code); }
#layers .layer-pill:nth-child(3) input:checked { background: var(--inference); border-color: var(--inference); box-shadow: 0 0 8px var(--inference); }

/* ======================================================
   TIMELINE — touch-friendly
   ====================================================== */
#timeline {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  pointer-events: auto;
  width: 100%;
}

#play-btn {
  background: transparent;
  border: 1px solid var(--text-faint);
  color: var(--text);
  width: 38px;
  height: 38px;
  font-size: 0.85em;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  border-radius: 50%;
}

#play-btn:hover, #play-btn:active {
  border-color: var(--models);
  color: var(--models);
}

.timeline-track {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35em;
}

#timeline-slider {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 2px;
  background: var(--rule);
  outline: none;
  cursor: pointer;
  padding: 0;
}

#timeline-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--models);
  cursor: pointer;
  box-shadow: 0 0 14px var(--models);
  transition: transform 0.15s;
}

#timeline-slider::-webkit-slider-thumb:active { transform: scale(1.25); }

#timeline-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--models);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 14px var(--models);
}

.timeline-labels {
  display: flex;
  justify-content: space-between;
  font-size: clamp(0.6rem, 1.8vw, 0.7rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

#timeline-end { transition: color 0.4s, text-shadow 0.4s; }

#timeline-end.live {
  color: var(--matrix-green);
  text-shadow: 0 0 8px var(--matrix-glow);
  animation: livePulse 2s ease-in-out infinite;
}

@keyframes livePulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* ======================================================
   FOOTER (info + share)
   ====================================================== */
#footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: clamp(0.66rem, 2vw, 0.74rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  pointer-events: auto;
  gap: 1rem;
}

#info-link, #share-btn {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--text-dim);
  padding: 0.55em 1em;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: all 0.2s;
}

#info-link:hover, #info-link:active, #share-btn:hover, #share-btn:active {
  color: var(--text);
  border-color: var(--text-faint);
}

#share-btn {
  color: var(--matrix-green);
  border-color: rgba(0, 255, 102, 0.35);
}

#share-btn:hover, #share-btn:active {
  color: var(--matrix-green);
  border-color: var(--matrix-green);
  box-shadow: 0 0 14px rgba(0, 255, 102, 0.25);
}

.dim { color: var(--text-faint); }

/* ======================================================
   MODALS
   ====================================================== */
.hidden { display: none !important; }

#info-modal, #share-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 3, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  pointer-events: auto;
}

.modal-content {
  background: #0a0e16;
  border: 1px solid var(--rule);
  padding: clamp(1.6rem, 5vw, 3rem);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  font-size: clamp(0.95rem, 2.6vw, 1.05rem);
  line-height: 1.65;
  color: var(--text);
}

.modal-content h2 {
  font-weight: 200;
  font-size: clamp(1.5rem, 5vw, 2rem);
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
}

.modal-content p { margin-bottom: 1rem; }
.modal-content p.small { font-size: clamp(0.78rem, 2.2vw, 0.88rem); line-height: 1.55; color: var(--text-dim); }
.modal-content p.dim { color: var(--text-dim); }

.modal-content ul {
  margin: 0.5rem 0 1.2rem 0;
  list-style: none;
  font-size: clamp(0.88rem, 2.4vw, 0.98rem);
  color: var(--text-dim);
}

.modal-content ul li {
  margin-bottom: 0.7rem;
  padding-left: 0.4rem;
}

.key {
  display: inline-block;
  padding: 0.1em 0.6em;
  font-size: 0.78em;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: ui-monospace, monospace;
  border: 1px solid currentColor;
  margin-right: 0.5em;
  border-radius: 2px;
}

.key.models { color: var(--models); }
.key.code { color: var(--code); }
.key.inference { color: var(--inference); }

.footer-credit {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-align: center;
}

#close-modal, #close-share {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.8rem;
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  transition: color 0.2s;
  border-radius: 50%;
}

#close-modal:hover, #close-share:hover { color: var(--text); }

/* share modal specific */
.share-row {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 1.2rem 0;
}

.share-row a, .share-row button {
  display: block;
  padding: 0.85em 1.2em;
  background: rgba(0, 255, 102, 0.05);
  border: 1px solid rgba(0, 255, 102, 0.35);
  color: var(--matrix-green);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: clamp(0.85rem, 2.4vw, 0.95rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: all 0.2s;
  text-align: center;
  text-shadow: 0 0 6px var(--matrix-glow);
}

.share-row a:hover, .share-row button:hover, .share-row a:active, .share-row button:active {
  background: rgba(0, 255, 102, 0.12);
  border-color: var(--matrix-green);
  box-shadow: 0 0 14px rgba(0, 255, 102, 0.3);
}

.share-preview {
  margin-top: 1rem;
  padding: 0.9rem;
  border-left: 2px solid var(--matrix-green);
  font-style: italic;
  font-size: clamp(0.85rem, 2.4vw, 0.95rem);
  color: var(--text-dim);
}

/* ======================================================
   RESPONSIVE — refine for tighter mobile
   ====================================================== */
@media (max-width: 480px) {
  #year-block { left: 1rem; top: 1rem; }
  #counter { right: 1rem; top: 1rem; }
  #bottom-bar { padding: 0.9rem 1rem max(1.2rem, env(safe-area-inset-bottom, 0.8rem)); gap: 0.7rem; }
  .layer-pill { padding: 0.5em 0.8em; }
  .opener-attr { letter-spacing: 0.14em; }
}

@media (max-width: 360px) {
  #year-display { font-size: 2.4rem; }
  .counter-num { font-size: 0.95rem; }
}