/* Meteor City Impact — editorial HUD on near-black. Monospace-led accents,
   asymmetric grid with generous negative space for title and readouts. */

:root {
  --ink: #0a0b0d;
  --panel: rgba(10, 11, 13, 0.72);
  --line: rgba(255, 255, 255, 0.14);
  --line-soft: rgba(255, 255, 255, 0.07);
  --text: #e8e6e1;
  --dim: rgba(232, 230, 225, 0.52);
  --accent: #ff5c33;
  --amber: #ffb45e;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Inter, Arial, sans-serif;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
}

#stage { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

#cutwipe {
  position: fixed; inset: 0; background: #000; opacity: 0; pointer-events: none; z-index: 30;
  transition: none;
}
#cutwipe.on { opacity: 1; }
#flashoverlay {
  position: fixed; inset: 0; background: radial-gradient(circle at 50% 46%, #fff8ea, #ffd9a8 60%, #fff); 
  opacity: 0; pointer-events: none; z-index: 25; mix-blend-mode: screen;
}

/* ---- brand card ------------------------------------------------------------ */
.brand {
  position: fixed; top: 4.5vh; left: 4.2vw; z-index: 20; max-width: min(34rem, 42vw);
  user-select: none; pointer-events: none;
}
.brand .eyebrow {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.34em; color: var(--accent);
  margin-bottom: 1.05rem;
}
.brand h1 {
  font-size: clamp(1.9rem, 3.6vw, 3.4rem); line-height: 0.98; font-weight: 250;
  letter-spacing: 0.02em;
}
.brand h1 span { display: block; font-weight: 800; letter-spacing: 0.06em; }
.brand .caption {
  margin-top: 1.15rem; padding-left: 1px;
  font-size: 0.74rem; line-height: 1.75; color: var(--dim); max-width: 24rem;
}

/* ---- telemetry ------------------------------------------------------------- */
#telemetry {
  position: fixed; top: 4.5vh; right: 3vw; z-index: 20; width: 17.5rem;
  background: var(--panel); border: 1px solid var(--line-soft); backdrop-filter: blur(7px);
  padding: 1rem 1.1rem 0.9rem;
  font-family: var(--mono);
}
.tel-head { font-size: 0.62rem; letter-spacing: 0.28em; color: var(--dim);
  display: flex; justify-content: space-between; border-bottom: 1px solid var(--line-soft);
  padding-bottom: 0.55rem; margin-bottom: 0.6rem; }
.tel-head #t-chapter { color: var(--amber); letter-spacing: 0.14em; }
#telemetry dl div {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 0.16rem 0; font-size: 0.68rem;
}
#telemetry dt { color: var(--dim); letter-spacing: 0.08em; }
#telemetry dd { font-weight: 600; color: var(--text); }
#quality-note {
  margin-top: 0.65rem; padding-top: 0.55rem; border-top: 1px solid var(--line-soft);
  font-size: 0.6rem; letter-spacing: 0.22em; color: var(--dim); opacity: 0;
  transition: opacity .4s;
}
#quality-note.show { opacity: 1; }
#quality-note.degraded { color: var(--accent); }

/* ---- transport -------------------------------------------------------------- */
.transport {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 21;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 1.1rem; align-items: center;
  padding: 0.85rem 3vw 1rem;
  background: linear-gradient(to top, rgba(8,9,11,0.92), rgba(8,9,11,0));
  font-family: var(--mono);
}
.deck-left { display: flex; gap: 0.45rem; align-items: center; }
.iconbtn {
  appearance: none; background: transparent; color: var(--text);
  border: 1px solid var(--line); width: 2.4rem; height: 2.4rem; font-size: 0.78rem;
  cursor: pointer; font-family: var(--mono);
}
.iconbtn.big { width: 3rem; height: 3rem; font-size: 0.95rem; }
.iconbtn:hover, .iconbtn:focus-visible { border-color: var(--accent); outline: none; }

#scrub-wrap { position: relative; padding: 1.2rem 0.4rem 1.4rem; }
#scrub-track {
  position: relative; height: 26px; cursor: ew-resize; touch-action: none;
  border-bottom: 1px solid var(--line);
}
#scrub-track::before {
  content: ""; position: absolute; left: 0; right: 0; top: 12px; height: 2px;
  background: repeating-linear-gradient(to right, var(--line) 0 2px, transparent 2px 9px);
}
#scrub-fill {
  position: absolute; left: 0; top: 11.5px; height: 3px; width: 0;
  background: var(--accent);
}
#scrub-handle {
  position: absolute; top: 5px; width: 2px; height: 16px; background: #fff;
  transform: translateX(-1px);
}
.beat-marker {
  position: absolute; top: -7px; width: 7px; height: 7px; transform: translateX(-3px) rotate(45deg);
  background: transparent; border: 1px solid var(--amber); cursor: pointer;
}
.beat-marker.zero { border-color: var(--text); }
.chap-seg {
  position: absolute; top: 20px; transform: translateX(2px);
  font-size: 0.52rem; letter-spacing: 0.22em; color: rgba(232,230,225,0.38);
  white-space: nowrap; pointer-events: none;
}

.deck-right { display: flex; flex-direction: column; gap: 0.42rem; align-items: flex-end; }
.row { display: flex; gap: 0.35rem; }
.chip {
  appearance: none; cursor: pointer; background: transparent; color: var(--dim);
  border: 1px solid var(--line-soft); font-family: var(--mono);
  font-size: 0.58rem; letter-spacing: 0.16em; padding: 0.42rem 0.66rem; white-space: nowrap;
  min-height: 26px;
}
.chip:hover { color: var(--text); border-color: var(--line); }
.chip.on { color: var(--ink); background: var(--accent); border-color: var(--accent); font-weight: 700; }
.chip.tri { min-width: 12.2rem; text-align: center; }

#toggle-col {
  display: grid; grid-template-columns: repeat(2, auto); gap: 0.35rem; align-content: end;
}

#btn-help {
  position: fixed; right: 3vw; bottom: calc(1rem + 8.6rem); z-index: 22;
  width: 2.2rem; height: 2.2rem; appearance: none; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  font-family: var(--mono); font-size: 0.8rem;
}
#btn-help:hover { border-color: var(--accent); }

/* free-mode pill + hint */
#mode-pill {
  position: fixed; top: 4.5vh; left: 50%; transform: translateX(-50%); z-index: 20;
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em; color: var(--amber);
  border: 1px solid rgba(255,180,94,0.4); padding: 0.42rem 0.9rem; background: var(--panel);
  display: none; pointer-events: none;
}
#hint {
  position: fixed; bottom: 9.4rem; left: 50%; transform: translateX(-50%); z-index: 20;
  font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--dim);
  transition: opacity 1s; pointer-events: none; text-align: center;
}
#hint.gone { opacity: 0; }

#data-chip { display: none; }

/* help modal */
#help-modal {
  position: fixed; inset: 0; z-index: 40; display: none; place-items: center;
  background: rgba(4,5,7,0.82);
}
#help-modal.open { display: grid; }
.sheet {
  width: min(32rem, 92vw); border: 1px solid var(--line); background: var(--ink);
  padding: 1.6rem 1.8rem 1.4rem;
}
.sheet h2 { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.4em; color: var(--accent); margin-bottom: 1rem; }
.sheet table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.7rem; }
.sheet td { padding: 0.34rem 0.2rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.sheet td:first-child { color: var(--amber); width: 9.2rem; letter-spacing: 0.08em; }
.fineprint { margin-top: 0.9rem; font-size: 0.62rem; color: var(--dim); font-family: var(--mono); letter-spacing: 0.06em; }
#help-close {
  margin-top: 1rem; width: 100%; padding: 0.6rem; appearance: none; cursor: pointer;
  background: var(--accent); color: var(--ink); border: 0; font-family: var(--mono);
  font-size: 0.68rem; letter-spacing: 0.3em; font-weight: 700;
}
.noscript { position: fixed; inset: 0; display: grid; place-items: center; font-family: var(--mono); }

/* ---- responsive ----------------------------------------------------------- */
@media (max-width: 1180px) {
  #toggle-col { grid-template-columns: auto; }
}
@media (max-width: 900px) {
  .brand { top: 3vh; left: 5vw; max-width: 78vw; }
  .brand .caption { display: none; }
  .brand h1 { font-size: clamp(1.5rem, 7vw, 2.2rem); }
  #telemetry {
    top: 3vh; right: 5vw; width: 14rem; transform: translateX(calc(100% + 6vw + 2px));
    transition: transform .3s ease;
  }
  body.tele-open #telemetry { transform: none; }
  #data-chip {
    display: block; position: fixed; top: 3vh; right: 5vw; z-index: 23;
    appearance: none; background: var(--panel); border: 1px solid var(--line);
    color: var(--text); font-family: var(--mono); font-size: 0.62rem;
    letter-spacing: 0.26em; padding: 0.55rem 0.8rem; cursor: pointer; min-height: 44px; min-width: 44px;
  }
  body.tele-open #data-chip { border-color: var(--accent); color: var(--accent); }
  .transport {
    grid-template-columns: auto 1fr;
    gap: 0.6rem; padding: 0.5rem 4vw 0.8rem;
  }
  .deck-right { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; align-items: flex-start; justify-content: flex-start; gap: 0.4rem; }
  .row { flex-wrap: wrap; }
  .chip { padding: 0.6rem 0.8rem; min-height: 44px; }
  .chip.tri { min-width: 0; }
  #toggle-col { grid-column: 1 / -1; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
  #scrub-wrap { padding-top: 1.6rem; }
  #hint { bottom: 15.5rem; font-size: 0.54rem; }
  #btn-help { bottom: auto; top: calc(3vh + 56px); }
  #mode-pill { top: auto; bottom: 12.5rem; }
}