/* RPA · Meridian map. Tokens come from the theme; shared atoms (.rpa-display, .rpa-eyebrow,
   .rpa-plate) are styled there. This file only lays the sheet out and inks the SVG. */

.rpa-meridian-map {
  --_ink: var(--rpa-c-text, var(--rpa-ink));
  --_line: var(--rpa-c-accent, var(--rpa-petrol));
  --_land: var(--rpa-c-accent, var(--rpa-petrol));
  --_muted: var(--rpa-c-muted, var(--rpa-slate));
  --_rule: var(--rpa-c-rule, var(--rpa-rule));
  --_rule-strong: var(--rpa-c-rule-strong, var(--rpa-rule-strong));
  --_halo: var(--rpa-c-surface, var(--rpa-paper));
  display: grid;
  gap: clamp(2rem, 1rem + 3vw, 4rem);
  color: var(--_ink);
}
/* Tones: the theme's contextual aliases (--rpa-c-*) flip with .is-tone-*; the fallbacks above
   keep the sheet correct on paper if they are ever absent. */

/* ---- text */
.rpa-meridian-map__head {
  display: grid;
  gap: 1.25rem clamp(2rem, 6vw, 7rem);
}
.rpa-meridian-map__eyebrow { margin: 0; color: var(--_muted); }
.rpa-meridian-map__title {
  font-size: var(--rpa-step-4);
  max-width: 16ch;
  margin: 0;
}
.rpa-meridian-map__text {
  font-size: var(--rpa-step-0);
  line-height: var(--rpa-leading-body);
  max-width: 52ch;
  margin: 0;
  color: var(--_muted);
}

@media (min-width: 900px) {
  .rpa-meridian-map--stacked .rpa-meridian-map__head {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: end;
  }
  .rpa-meridian-map--stacked .rpa-meridian-map__eyebrow { grid-column: 1 / -1; }
}
@media (min-width: 1100px) {
  .rpa-meridian-map--beside {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
  .rpa-meridian-map--beside .rpa-meridian-map__title { font-size: var(--rpa-step-3); }
}

/* ---- the sheet */
.rpa-meridian-map__sheet {
  container-type: inline-size;
  container-name: rpa-sheet;
  min-width: 0;
}
.rpa-meridian-map__figure { margin: 0; }
.rpa-meridian-map__svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.rpa-meridian-map__land {
  fill: none;
  stroke: var(--_land);
  stroke-width: 3.3;
  stroke-linecap: round;
  stroke-dasharray: 0 8;
  opacity: 0.62;
}
.rpa-meridian-map__grid,
.rpa-meridian-map__equator,
.rpa-meridian-map__neatline {
  fill: none;
  stroke: var(--_rule);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.rpa-meridian-map__equator { stroke: var(--_rule-strong); stroke-dasharray: 2 5; }
.rpa-meridian-map__neatline { stroke: var(--_rule-strong); }
.rpa-meridian-map__degrees text {
  font-family: var(--rpa-mono);
  font-size: 13px; /* SVG user units: ≈12px on a 1260px sheet */
  letter-spacing: 0.04em;
  fill: var(--_muted);
}

.rpa-meridian-map__arc {
  fill: none;
  stroke: var(--_line);
  stroke-width: 1.5;
  stroke-linecap: round;
}
.rpa-meridian-map__leader {
  fill: none;
  stroke: var(--_ink);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  opacity: 0.7;
}
.rpa-meridian-map__dot {
  fill: var(--_halo);
  stroke: var(--_ink);
  stroke-width: 1.6;
}
.rpa-meridian-map__origin-ring {
  fill: none;
  stroke: var(--rpa-verdigris);
  stroke-width: 1.4;
}
.rpa-meridian-map__origin-dot {
  fill: var(--rpa-verdigris);
  stroke: var(--_halo);
  stroke-width: 2;
}
.rpa-meridian-map__label {
  font-family: var(--rpa-mono);
  font-weight: 450;
  letter-spacing: 0.08em;
  fill: var(--_ink);
  /* A paper halo keeps a label readable where an arc or the dot grid passes behind it. */
  paint-order: stroke fill;
  stroke: var(--_halo);
  stroke-width: 5;
  stroke-linejoin: round;
}
.rpa-meridian-map__label--origin { font-weight: 650; }
/* Key numbers and the swipe hint belong to the small sheet only (see the end of this file). */
.rpa-meridian-map__num,
.rpa-meridian-map__hint { display: none; }

/* ---- legend: the numbered key, always present; the only text on small sheets */
.rpa-meridian-map__legend {
  display: grid;
  gap: 2rem clamp(2rem, 5vw, 5rem);
  margin-block-start: clamp(1.5rem, 1rem + 1.5vw, 2.5rem);
}
.rpa-meridian-map__legend-title {
  margin: 0;
  padding-block-end: 0.75rem;
  border-block-end: 1px solid var(--_rule-strong);
  color: var(--_muted);
}
.rpa-meridian-map__legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19.5rem), 1fr));
  column-gap: clamp(1.5rem, 3vw, 3rem);
}
.rpa-meridian-map__legend-item {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.75rem;
  padding-block: 0.7rem;
  border-block-end: 1px solid var(--_rule);
  font-size: var(--rpa-step-0);
}
.rpa-meridian-map__legend-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rpa-meridian-map__legend-num { font-size: var(--rpa-step--1); }
.rpa-meridian-map.is-tone-ink .rpa-meridian-map__legend-num,
.rpa-meridian-map.is-tone-petrol .rpa-meridian-map__legend-num { color: var(--_muted); }
.rpa-meridian-map__legend-mark {
  inline-size: 0.625rem;
  block-size: 0.625rem;
  border-radius: 50%;
  background: var(--rpa-verdigris);
  align-self: center;
}
.rpa-meridian-map__legend-coord {
  font-family: var(--rpa-mono);
  font-size: var(--rpa-step--1);
  font-variant-numeric: tabular-nums;
  color: var(--_muted);
  white-space: nowrap;
}

@container rpa-sheet (min-width: 1000px) {
  .rpa-meridian-map__legend { grid-template-columns: minmax(16rem, 1fr) minmax(0, 3fr); }
  .rpa-meridian-map__legend-group--origins .rpa-meridian-map__legend-list { grid-template-columns: 1fr; }
}

/* Beside the text the sheet is never wide enough for legible degree labels. */
.rpa-meridian-map--beside .rpa-meridian-map__degrees { display: none; }

/* Small sheets: the type in the drawing would fall under 9px, so the drawing goes quiet —
   dots and arcs only, drawn a little heavier — and the legend carries the names. */
@container rpa-sheet (max-width: 859px) {
  .rpa-meridian-map--stacked .rpa-meridian-map__label,
  .rpa-meridian-map--stacked .rpa-meridian-map__leader,
  .rpa-meridian-map--stacked .rpa-meridian-map__degrees { display: none; }
}
@container rpa-sheet (max-width: 619px) {
  .rpa-meridian-map--beside .rpa-meridian-map__label,
  .rpa-meridian-map--beside .rpa-meridian-map__leader,
  .rpa-meridian-map--beside .rpa-meridian-map__degrees { display: none; }
}
@container rpa-sheet (min-width: 620px) and (max-width: 859px) {
  .rpa-meridian-map__arc { stroke-width: 2.2; }
  .rpa-meridian-map__dot,
  .rpa-meridian-map__origin-dot,
  .rpa-meridian-map__origin-ring {
    transform-box: fill-box;
    transform-origin: center;
    transform: scale(1.5);
  }
}
/* ---- Small sheets (phones). At full width the world would be 130px tall and its marks hairlines.
   Instead the sheet is drawn 280px tall — about two screens wide — inside a frame that slides
   sideways and starts on Indonesia; each city carries its legend number; the legend sets in two
   compact columns without coordinates. */
@container rpa-sheet (max-width: 619px) {
  .rpa-meridian-map__figure {
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    border: 1px solid var(--_rule-strong);
    border-radius: var(--rpa-radius);
  }
  .rpa-meridian-map .rpa-meridian-map__figure > .rpa-meridian-map__svg {
    width: auto;
    max-width: none;
    height: 17.5rem;
    aspect-ratio: 1440 / 536;
    overflow: hidden;
  }
  .rpa-meridian-map__neatline { display: none; }
  .rpa-meridian-map__arc { stroke-width: 2; }
  .rpa-meridian-map__dot,
  .rpa-meridian-map__origin-dot,
  .rpa-meridian-map__origin-ring {
    transform-box: fill-box;
    transform-origin: center;
    transform: scale(1.35);
  }
  .rpa-meridian-map .rpa-meridian-map__dest .rpa-meridian-map__leader { display: block; }
  .rpa-meridian-map__num {
    display: block;
    font-family: var(--rpa-mono);
    font-size: 23px; /* user units: ≈12px on the 280px-tall sheet */
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    fill: var(--_ink);
    paint-order: stroke fill;
    stroke: var(--_halo);
    stroke-width: 7;
    stroke-linejoin: round;
  }
  .rpa-meridian-map__hint {
    display: block;
    margin: 0.75rem 0 0;
    text-align: center;
    color: var(--_muted);
  }

  .rpa-meridian-map__legend { gap: 1.5rem; }
  .rpa-meridian-map__legend-list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 1.25rem; }
  .rpa-meridian-map__legend-item {
    grid-template-columns: 1.5rem minmax(0, 1fr);
    gap: 0.5rem;
    padding-block: 0.5rem;
    font-size: var(--rpa-step--1);
    line-height: 1.35;
  }
  .rpa-meridian-map__legend-item--origin { grid-template-columns: 0.625rem minmax(0, 1fr); }
  .rpa-meridian-map__legend-coord { display: none; }
}