/* ==========================================================================
   M1 Fundamentals — module styles. Every class is prefixed .m1-
   Chrome comes from tokens only. Taught colours are set inline by the lesson.
   Rules scoped under .mock read the --m-* mock variables instead.
   ========================================================================== */

/* ---- shared bits -------------------------------------------------------- */

.m1-field { display: grid; gap: 6px; min-width: 0; justify-items: start; }

.m1-sub {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 650;
  letter-spacing: -0.01em;
}

.m1-feedback { max-width: none; }
.m1-feedback:empty { display: none; }

.m1-verdict {
  display: inline-grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--s2);
  align-items: start;
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--ink);
}
.m1-verdict .icon { margin-top: 3px; font-size: 1rem; }
.m1-verdict.is-good .icon { color: var(--good); }
.m1-verdict.is-bad .icon { color: var(--bad); }

.m1-cardhost { width: 100%; min-width: 0; }

/* ---- 1.1 Three dials ---------------------------------------------------- */

.m1-dials {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--s5);
  align-items: start;
}

.m1-hero {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 2px;
  min-height: clamp(200px, 24vw, 272px);
  padding: var(--s4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.m1-hero__tag { color: inherit; opacity: 0.8; margin-bottom: auto; }
.m1-hero__hex {
  font-size: clamp(2rem, 1.5rem + 2.2vw, 3rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
}
.m1-hero__hsl { font-size: var(--fs-sm); opacity: 0.9; }

.m1-words { font-size: var(--fs-md); font-weight: 600; line-height: 1.35; min-height: 2.7em; }

.m1-states { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s2); }
.m1-state {
  display: grid;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  min-width: 0;
}
.m1-state__block {
  display: flex;
  align-items: flex-end;
  height: 44px;
  padding: 6px 8px;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.1;
}
.m1-state__nums {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 8px;
  padding: 6px 8px;
  font-size: var(--fs-micro);
  color: var(--ink-2);
}
.m1-state__changed {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.m1-game {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--s5);
  align-items: start;
}
.m1-round { font-size: var(--fs-sm); color: var(--ink); }
.m1-round .mono { font-weight: 600; }
.m1-match {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  height: clamp(150px, 20vw, 216px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}
.m1-match__half { padding: var(--s3); }
.m1-match__half .micro { color: inherit; opacity: 0.85; }

/* ---- 1.2 RGB, HSL, OKLCH ------------------------------------------------ */

.m1-onecolour {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: var(--s5);
  align-items: center;
}
.m1-model { gap: var(--s3); }
.m1-model__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px var(--s3); }
.m1-model__name { font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 700; letter-spacing: -0.02em; }
.m1-model__head .mono { font-size: var(--fs-xs); color: var(--ink-2); }
.m1-model > .caption { min-height: 4.4em; }

.m1-gamut {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--s2);
  padding: var(--s2) var(--s3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  line-height: 1.4;
  color: var(--ink-2);
  min-height: 5.2em;
  align-content: start;
}
.m1-gamut .icon { margin-top: 3px; }
.m1-gamut.is-past { color: var(--ink); border-color: var(--warn); border-style: dashed; }
.m1-gamut.is-past .icon { color: var(--warn); }

.m1-lrow { display: grid; gap: 6px; min-width: 0; }
.m1-lrow__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px var(--s3); }
.m1-lrow__title { font-size: var(--fs-sm); font-weight: 600; }
.m1-lrow__formula { font-size: var(--fs-xs); color: var(--ink-2); }
.m1-lrow__cells { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 4px; }
.m1-lrow__cell { display: grid; gap: 4px; min-width: 0; }
.m1-lrow__sw { display: block; height: 56px; border: 1px solid var(--line); border-radius: 3px; }
.m1-lrow__lift {
  position: relative;
  display: block;
  height: 32px;
  border-bottom: 1px solid var(--line-strong);
  display: none;
}
.m1-lrow__lift i { position: absolute; left: 22%; right: 22%; bottom: 0; background: var(--ink-2); border-radius: 2px 2px 0 0; }
.m1-lrow__num { font-size: var(--fs-micro); text-align: center; color: var(--ink); display: none; }
.m1-lrow.is-grey .m1-lrow__lift, .m1-lrow.is-grey .m1-lrow__num { display: block; }

.m1-mix__row { display: grid; gap: 6px; min-width: 0; }
.m1-mix__track { position: relative; }
.m1-mix__bar { height: 56px; border: 1px solid var(--line); border-radius: var(--radius); }
.m1-mix__mid {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-size: var(--fs-xs);
  line-height: 1.2;
  white-space: nowrap;
}

.m1-rowquiz .sb-quiz__options { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.m1-qrow { display: grid; gap: 4px; min-width: 0; }
.m1-qrow__line { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 3px; }
.m1-qrow__line i { display: block; height: 44px; border-radius: 2px; }
.m1-qrow__grey { visibility: hidden; }
.m1-qrow__grey i { height: 14px; }
.m1-rowquiz.is-revealed .m1-qrow__grey { visibility: visible; }

.mock.m1-labels { display: grid; gap: 9px; padding: 14px; background: var(--m-surface); }
.m1-labels__row { display: flex; align-items: center; gap: 10px; min-width: 0; }
.m1-labels__tag {
  flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  width: 70px; height: 22px;
  border-radius: 11px;
  font-size: 11.5px;
  font-weight: 650;
  line-height: 1;
}
.m1-labels__text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--m-text); font-size: 12.5px; }

/* ---- 1.3 The wheel and temperature -------------------------------------- */

.m1-wheelgrid {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: var(--s6);
  align-items: start;
}
.m1-wheelwrap {
  position: relative;
  width: min(320px, 100%);
  aspect-ratio: 1;
  padding: 10%;
  margin: 0 auto;
}
.m1-wheelwrap .sb-wheel { width: 100%; }
.m1-wheelwrap__arcs { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; pointer-events: none; overflow: visible; }
.m1-arc { color: var(--ink-2); }
.m1-arc path { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.m1-arc .m1-arc__dash { stroke-dasharray: 1 6; }
.m1-arc text {
  fill: currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  dominant-baseline: middle;
}
.m1-wheelwrap[data-temp="warm"] .m1-arc--warm,
.m1-wheelwrap[data-temp="cool"] .m1-arc--cool { color: var(--ink); }
.m1-wheelwrap[data-temp="warm"] .m1-arc--warm path,
.m1-wheelwrap[data-temp="cool"] .m1-arc--cool path { stroke-width: 4; }
.m1-wheelwrap[data-temp="warm"] .m1-arc--warm text,
.m1-wheelwrap[data-temp="cool"] .m1-arc--cool text { font-weight: 700; }

.m1-temp { font-size: var(--fs-sm); font-weight: 600; color: var(--ink-2); line-height: 1.2; }

.m1-jumps { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 2px; }
.m1-jump {
  display: grid;
  gap: 3px;
  justify-items: center;
  padding: 4px 2px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-2);
  font-size: var(--fs-micro);
  line-height: 1.2;
  min-width: 0;
}
.m1-jump i { display: block; width: 100%; height: 22px; border: 1px solid var(--line); border-radius: 3px; }
.m1-jump:hover { color: var(--ink); }
.m1-jump[aria-pressed="true"] { border-color: var(--ink); background: var(--surface); color: var(--ink); font-weight: 700; }

.m1-mood {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s2) var(--s3);
  padding: var(--s3) var(--s4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.m1-mood .micro { flex: 1 0 100%; }
.m1-mood__label { font-family: var(--font-display); font-size: var(--fs-md); font-weight: 700; letter-spacing: -0.01em; }
.m1-mood__words { display: flex; flex-wrap: wrap; gap: 6px; }
.m1-word {
  padding: 2px 8px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  line-height: 1.4;
}

.m1-sort { display: grid; gap: var(--s4); min-width: 0; }
.m1-sort__bins { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s4); }
.m1-bin {
  display: grid;
  gap: var(--s2);
  align-content: start;
  padding: var(--s3);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg);
  min-width: 0;
}
.m1-bin--tray { border-style: solid; border-color: var(--line); background: var(--surface-2); }
.m1-bin__title { font-family: var(--font-display); font-size: var(--fs-md); font-weight: 700; letter-spacing: -0.01em; }
.m1-bin--tray .m1-bin__title { font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.m1-bin__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: var(--s2);
  min-height: 108px;
  align-content: start;
}
.m1-bin__list:empty::before {
  content: attr(data-empty);
  grid-column: 1 / -1;
  align-self: center;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.m1-tile {
  display: grid;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  min-width: 0;
}
.m1-tile__block { display: flex; align-items: flex-end; height: 52px; padding: 4px 6px; border-radius: 3px; font-size: var(--fs-xs); font-weight: 600; }
.m1-tile .sb-seg { display: flex; flex-wrap: nowrap; }
.m1-tile .sb-seg__btn { flex: 1 1 0; padding: 4px 4px; min-width: 0; }
.m1-tile__mark { display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); font-weight: 600; }
.m1-tile__mark:empty { display: none; }
.m1-tile.is-right { border: 2px solid var(--good); padding: 5px; }
.m1-tile.is-wrong { border: 2px dashed var(--bad); padding: 5px; }
.m1-tile.is-right .m1-tile__mark .icon { color: var(--good); }
.m1-tile.is-wrong .m1-tile__mark .icon { color: var(--bad); }

/* ---- 1.4 Colour is relative --------------------------------------------- */

.m1-relgrid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: var(--s5);
  align-items: start;
}
.m1-stage {
  container-type: inline-size;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  height: clamp(180px, 22vw, 260px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}
.m1-stage__half { position: relative; display: grid; place-items: center; }
.m1-stage__tag { position: absolute; top: 8px; left: 10px; font-size: var(--fs-xs); font-weight: 600; opacity: 0.85; }
.m1-stage__half--b .m1-stage__tag { left: auto; right: 10px; }
.m1-chip {
  display: block;
  width: 18cqw;
  min-width: 44px;
  aspect-ratio: 1;
  transition: transform 0.4s ease;
}
.m1-stage.is-joined .m1-stage__half--a .m1-chip { transform: translateX(calc(25cqw - 50%)); }
.m1-stage.is-joined .m1-stage__half--b .m1-chip { transform: translateX(calc(50% - 25cqw)); }

.m1-ask { font-size: var(--fs-md); font-weight: 600; line-height: 1.35; min-height: 2.7em; max-width: none; }
.m1-ratios { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s3); }
.m1-ratio {
  display: grid;
  gap: 2px;
  padding: var(--s2) var(--s3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.m1-ratio > .mono:not(.micro) { font-size: var(--fs-lg); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; }

.m1-ramp {
  display: grid;
  align-items: center;
  height: 104px;
  padding: 0 8%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}
.m1-ramp.is-flat { background: var(--surface-2); }
.m1-ramp__bar { display: block; height: 34px; }

.m1-proof { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; font-size: var(--fs-sm); color: var(--ink-2); min-height: 1.6em; max-width: none; }
.m1-proof__hex { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); font-weight: 600; }
.m1-proof__hex i { display: block; width: 14px; height: 14px; border: 1px solid var(--line-strong); border-radius: 2px; }

/* ---- 1.5 What colours signal -------------------------------------------- */

.m1-signalgrid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--s5);
  align-items: start;
}
.m1-signal {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--s4);
  align-items: center;
  padding: var(--s4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.m1-signal__chip { display: grid; place-items: center; width: 76px; height: 76px; border-radius: var(--radius); }
.m1-signal__name { font-family: var(--font-display); font-size: var(--fs-xl); font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.m1-signal__says { font-size: 0.9375rem; line-height: 1.4; min-height: 2.8em; }

.m1-huezone { display: grid; gap: 0; min-width: 0; }
.m1-zones { position: relative; height: 10px; margin: 0 7px; }
.m1-zone { position: absolute; top: 0; height: 3px; border-radius: 2px; background: var(--line-strong); }
.m1-zones[data-active="danger"] .m1-zone[data-zone="danger"],
.m1-zones[data-active="warning"] .m1-zone[data-zone="warning"],
.m1-zones[data-active="success"] .m1-zone[data-zone="success"],
.m1-zones[data-active="info"] .m1-zone[data-zone="info"] { height: 8px; background: var(--ink); }

.mock.m1-pieces { display: grid; gap: 12px; padding: 16px; }
.m1-pieces .mock-alert { min-height: 66px; }
.m1-piece {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--m-border);
  border-radius: 10px;
  background: var(--m-surface);
  min-width: 0;
}
.m1-piece__name { flex: 1 1 auto; min-width: 0; font-weight: 600; color: var(--m-text); }
.m1-piece__meta { color: var(--m-muted); font-variant-numeric: tabular-nums; }
.m1-piece--actions { justify-content: flex-end; padding: 0; border: 0; background: none; flex-wrap: wrap; }

.m1-matchlist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s4); }
.m1-matchrow {
  display: grid;
  gap: var(--s3);
  align-content: start;
  justify-items: start;
  padding: var(--s3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  min-width: 0;
}
.m1-matchrow.is-right { border: 2px solid var(--good); padding: calc(var(--s3) - 1px); }
.m1-matchrow.is-wrong { border: 2px dashed var(--bad); padding: calc(var(--s3) - 1px); }
.mock.m1-msg { padding: 8px; }
.m1-msg.is-unset .mock-alert { border-style: dashed; }
.m1-msg__mark { max-width: none; }
.m1-msg__mark:empty { display: none; }
.m1-dotlabel { display: inline-flex; align-items: center; gap: 6px; }
.m1-dotlabel i { display: block; width: 10px; height: 10px; border-radius: 50%; box-shadow: 0 0 0 1px var(--line-strong); }

/* ---- narrow screens ------------------------------------------------------ */

@media (max-width: 720px) {
  .m1-dials, .m1-game, .m1-onecolour, .m1-wheelgrid, .m1-relgrid, .m1-signalgrid, .m1-matchlist {
    grid-template-columns: minmax(0, 1fr);
  }
  .m1-model > .caption, .m1-gamut { min-height: 0; }
  .m1-lrow__sw { height: 44px; }
  .m1-jumps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .m1-signal__chip { width: 60px; height: 60px; }
  .m1-state__block { height: 38px; }
}

@media (prefers-reduced-motion: reduce) {
  .m1-chip { transition: none; }
}
.m1-bin--tray .m1-bin__list:empty { min-height: 0; }

.m1-matchrow .sb-seg { display: flex; flex-wrap: nowrap; max-width: 100%; }
.m1-matchrow .sb-seg__btn { flex: 1 1 auto; padding: 4px 8px; }
@media (max-width: 720px) {
  .m1-matchrow .sb-seg { width: 100%; }
  .m1-matchrow .sb-seg__btn { padding: 4px 4px; }
  .m1-dotlabel { gap: 4px; }
  .m1-signalgrid .m1-field .sb-seg__btn { padding: 4px 7px; }
}