/* =============================================================================
   Hambone — Turn demo + card gallery
   Every value resolves through tokens.css / themes.css. No literal colors,
   sizes, or timings. Glow-dependent effects scale by --glow so the flat themes
   (a24, noir) read as flat, not broken.
   ========================================================================== */

/* --- Section utilities used by the new markup --------------------------- */
.section--elev { background: color-mix(in srgb, var(--bg-elev) 60%, transparent); }
.text-center { text-align: center; }
.closer__title { font-size: var(--fs-2xl); margin-block: var(--space-3) var(--space-6); }
.closer__sub { color: var(--ink-dim); }
.closer .hero__cta { margin-top: var(--space-8); }
.btn--sm { min-height: auto; padding: var(--space-2) var(--space-5); font-size: var(--fs-xs); }

/* =============================================================================
   PLAYING CARD  (shared by the stage + the gallery)
   ========================================================================== */
.pcard {
  position: relative;
  display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-5);
  min-height: 13rem;
  border-radius: var(--radius-lg);
  border: var(--border-hair) solid var(--line);
  background:
    linear-gradient(160deg,
      color-mix(in srgb, var(--surface-2) 90%, transparent),
      color-mix(in srgb, var(--surface) 95%, transparent));
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
/* Accent hairline down the card's leading edge */
.pcard::before {
  content: ""; position: absolute; inset-block: 0; inset-inline-start: 0;
  width: var(--border-thick);
  background: var(--accent);
  opacity: 0.9;
}
.pcard--question::before { background: var(--ink-dim); }

.pcard__kind {
  font-family: var(--font-body); font-size: var(--fs-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--accent);
}
.pcard--question .pcard__kind { color: var(--ink-faint); }
.pcard__text {
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  letter-spacing: var(--display-tracking);
  text-transform: var(--display-transform);
  font-size: var(--fs-xl);
  line-height: var(--lh-snug);
  margin: 0; margin-block-start: auto;
  color: var(--ink);
  text-wrap: balance;
}
.pcard__foot {
  font-family: var(--font-body); font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--ink-faint);
}

/* =============================================================================
   THE DEMO
   ========================================================================== */
.demo {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  grid-template-areas: "stage phones" "transport transport";
  align-items: start;
}
@media (max-width: 900px) {
  .demo { grid-template-columns: minmax(0, 1fr); grid-template-areas: "stage" "phones" "transport"; }
}

/* --- Stage (the big screen) --------------------------------------------- */
.demo__stage {
  grid-area: stage;
  border-radius: var(--radius-xl);
  border: var(--border-hair) solid var(--line);
  background: color-mix(in srgb, var(--bg) 80%, var(--surface));
  box-shadow: var(--shadow-lg),
              0 0 calc(60px * var(--glow)) color-mix(in srgb, var(--accent) 12%, transparent);
  overflow: hidden;
}
.demo__chrome {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-hair) solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
}
.demo__dot {
  width: var(--space-3); height: var(--space-3); border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--ink-faint) 50%, transparent);
}
.demo__chrome-label {
  margin-inline-start: var(--space-3);
  font-family: var(--font-body); font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--ink-faint);
}
.demo__chrome-label b { color: var(--accent); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-wider); }
.demo__timer {
  margin-inline-start: auto;
  font-family: var(--font-display); font-size: var(--fs-sm);
  font-variant-numeric: tabular-nums;
  color: var(--ink-dim); min-width: 4ch; text-align: end;
  transition: color var(--dur-fast) var(--ease-out);
}
.demo__timer.is-urgent { color: var(--accent); }

.demo__screen { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-5); }
.demo__caption {
  min-height: calc(var(--fs-md) * var(--lh-normal));
  color: var(--ink-dim); font-size: var(--fs-md);
  text-align: center; margin-inline: auto;
  transition: opacity var(--dur-base) var(--ease-out);
}
.demo__cards { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
/* Stage cards stay side-by-side down to the smallest widths: stacking them
   pushes the score (the payoff) below the fold. Shrink instead of stack. */
@media (max-width: 520px) {
  .demo__screen { padding: var(--space-4); gap: var(--space-4); }
  .demo__cards { gap: var(--space-3); }
  .demo__cards .pcard { min-height: 8.5rem; padding: var(--space-4) var(--space-3); gap: var(--space-2); }
  .demo__cards .pcard__text { font-size: var(--fs-md); }
  .demo__cards .pcard__foot { display: none; }
  /* Keep all five chips on one line at 390px. */
  .demo__tally { padding: var(--space-3); gap: var(--space-3); }
  .tally__votes { gap: var(--space-1); }
  .votechip { width: var(--space-8); height: var(--space-8); font-size: var(--fs-md); }
}

/* Cards deal in with a slight rotation, then settle. */
.demo__cards .pcard {
  opacity: 0;
  transform: translateY(var(--space-6)) rotate(-3deg) scale(0.96);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-spring);
}
.demo__cards .pcard.is-dealt { opacity: 1; transform: none; }

/* --- Tally + score ------------------------------------------------------- */
.demo__tally {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); flex-wrap: wrap;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-hair) solid var(--line);
  background: color-mix(in srgb, var(--surface) 40%, transparent);
  opacity: 0; transform: translateY(var(--space-3));
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.demo__tally.is-visible { opacity: 1; transform: none; }
/* nowrap: five chips are one ballot — a 4+1 wrap reads as an orphan. */
.tally__votes { display: flex; gap: var(--space-2); flex-wrap: nowrap; min-height: var(--touch); align-items: center; }
.votechip {
  display: inline-flex; align-items: center; justify-content: center;
  width: var(--touch); height: var(--touch);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-family: var(--font-display); font-size: var(--fs-lg);
  font-variant-numeric: tabular-nums;
  opacity: 0; transform: translateY(calc(var(--space-4) * -1)) scale(0.6);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-spring);
}
.votechip.is-in { opacity: 1; transform: none; }

.tally__score { display: flex; align-items: baseline; gap: var(--space-3); }
.tally__score-num {
  font-family: var(--font-display); font-weight: var(--display-weight);
  font-size: var(--fs-2xl); line-height: 1;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-spring),
              text-shadow var(--dur-base) var(--ease-out);
}
.tally__score.is-revealed .tally__score-num {
  color: var(--accent);
  transform: scale(1.12);
  text-shadow: 0 0 calc(28px * var(--glow)) color-mix(in srgb, var(--accent) 70%, transparent);
}
.tally__score-label {
  font-family: var(--font-body); font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--ink-faint);
}

/* --- Phones -------------------------------------------------------------- */
.demo__phones { grid-area: phones; display: flex; flex-direction: column; gap: var(--space-4); }
@media (max-width: 900px) { .demo__phones { flex-direction: row; } }
@media (max-width: 520px) { .demo__phones { flex-direction: column; } }

.phone {
  position: relative; flex: 1;
  border-radius: var(--radius-xl);
  border: var(--border-thin) solid var(--line);
  background: var(--bg-elev);
  padding: var(--space-5) var(--space-4) var(--space-4);
  box-shadow: var(--shadow-md);
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-spring);
}
/* The phone whose turn it is lifts + glows. */
.phone.is-live {
  border-color: var(--accent);
  transform: translateY(calc(var(--space-1) * -1));
  box-shadow: var(--shadow-md), 0 0 calc(32px * var(--glow)) color-mix(in srgb, var(--accent) 45%, transparent);
}
.phone__notch {
  width: 30%; height: var(--space-1);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--ink-faint) 40%, transparent);
  margin: 0 auto var(--space-4);
}
.phone__screen { display: flex; flex-direction: column; gap: var(--space-3); }
.phone__role {
  font-family: var(--font-body); font-size: var(--fs-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--ink-faint);
}
.phone.is-live .phone__role { color: var(--accent); }
.phone__prompt {
  font-family: var(--font-display); font-size: var(--fs-lg);
  font-weight: var(--display-weight); line-height: var(--lh-snug);
  color: var(--ink); margin: 0; text-wrap: balance;
  min-height: calc(var(--fs-lg) * var(--lh-snug) * 2);
}
.phone__prompt--sm { font-size: var(--fs-md); min-height: auto; }
.phone__hint {
  font-family: var(--font-body); font-size: var(--fs-xs);
  color: var(--ink-faint); letter-spacing: var(--tracking-wide); text-transform: uppercase;
}

/* Vote pad */
.votepad { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-2); }
.votepad__key {
  min-height: var(--touch);
  border-radius: var(--radius-md);
  border: var(--border-hair) solid var(--line);
  background: color-mix(in srgb, var(--surface) 50%, transparent);
  color: var(--ink-dim);
  font-family: var(--font-display); font-size: var(--fs-md);
  cursor: default; padding: 0;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring), border-color var(--dur-fast) var(--ease-out);
}
.votepad__key.is-picked {
  background: var(--accent); color: var(--accent-ink); border-color: var(--accent);
  transform: scale(1.14);
  box-shadow: 0 0 calc(20px * var(--glow)) color-mix(in srgb, var(--accent) 60%, transparent);
}

/* --- Transport ----------------------------------------------------------- */
.demo__transport {
  grid-area: transport;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); flex-wrap: wrap;
}
.demo__steps {
  display: flex; align-items: center; gap: var(--space-4);
  list-style: none; margin: 0; padding: 0; flex-wrap: wrap;
}
.demo__steps li {
  position: relative;
  font-family: var(--font-body); font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--ink-faint);
  padding-inline-start: var(--space-4);
  transition: color var(--dur-base) var(--ease-out);
}
.demo__steps li::before {
  content: ""; position: absolute; inset-inline-start: 0; top: 50%;
  transform: translateY(-50%);
  width: var(--space-2); height: var(--space-2);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--ink-faint) 50%, transparent);
  transition: background var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
/* Completed steps carry the accent at reduced strength — dim ink alone reads as
   "not yet reached", which is the opposite of what a done step means. */
.demo__steps li.is-done { color: color-mix(in srgb, var(--accent) 70%, var(--ink-dim)); }
.demo__steps li.is-done::before { background: color-mix(in srgb, var(--accent) 60%, transparent); }
.demo__steps li.is-active { color: var(--accent); }
.demo__steps li.is-active::before {
  background: var(--accent);
  box-shadow: 0 0 calc(14px * var(--glow)) var(--accent);
}
.demo__transport .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }

/* =============================================================================
   GALLERY — flip cards
   ========================================================================== */
/* 3-up on wide screens so six cards fill two clean rows (auto-fit gave 4+2 and
   left a hole). Collapses to 2-up, then 1-up. */
.gallery {
  display: grid; gap: var(--space-5);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  perspective: 1400px;
}
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .gallery { grid-template-columns: minmax(0, 1fr); } }
.flipcard {
  margin: 0;
  min-height: 13rem;
  transform-style: preserve-3d;
  border-radius: var(--radius-lg);
  cursor: pointer;
  --tilt-x: 0deg; --tilt-y: 0deg;
}
.flipcard__inner {
  position: relative; height: 100%;
  transform-style: preserve-3d;
  transform: rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition: transform var(--dur-base) var(--ease-out);
}
/* Hover/focus flips on pointer devices; .is-flipped is the tap path (touch has
   no hover, and the deck must be explorable on a phone — ADR 0005 parity). */
.flipcard:hover .flipcard__inner,
.flipcard:focus-visible .flipcard__inner,
.flipcard.is-flipped .flipcard__inner {
  transform: rotateY(180deg);
}
.flipcard__face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.flipcard__face--back { transform: rotateY(180deg); }

/* Flip affordance — a corner tick that fades once the card is flipped. Without
   it, "hover to flip" is invisible on a card that looks static. */
.flipcard__face--front::after {
  content: "↻";
  position: absolute; top: var(--space-4); right: var(--space-4);
  font-size: var(--fs-sm); line-height: 1;
  color: var(--ink-faint);
  transition: color var(--dur-fast) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.flipcard:hover .flipcard__face--front::after,
.flipcard:focus-visible .flipcard__face--front::after { color: var(--accent); transform: rotate(180deg); }

.gallery__note {
  margin-top: var(--space-6);
  text-align: center; margin-inline: auto;
  color: var(--ink-faint); font-size: var(--fs-sm);
}

/* --- Motion off: no tilt, no flip-on-hover, no dealing ------------------- */
@media (prefers-reduced-motion: reduce) {
  .flipcard__inner { transition: none; }
  .flipcard:hover .flipcard__inner, .flipcard:focus-visible .flipcard__inner { transform: none; }
  .demo__cards .pcard { opacity: 1; transform: none; }
  .votechip { opacity: 1; transform: none; }
  .demo__tally { opacity: 1; transform: none; }
}
[data-motion="off"] .flipcard__inner { transition: none; }
[data-motion="off"] .flipcard:hover .flipcard__inner,
[data-motion="off"] .flipcard:focus-visible .flipcard__inner { transform: none; }
[data-motion="off"] .demo__cards .pcard { opacity: 1; transform: none; }
[data-motion="off"] .votechip { opacity: 1; transform: none; }
[data-motion="off"] .demo__tally { opacity: 1; transform: none; }