/* 2026-09-detail-reveal-card — self-contained, no globals, no imports. */

.detail-reveal-card {
  /* --- tunables ------------------------------------------------------- */
  --detail-reveal-card-width: 21rem;
  --detail-reveal-card-ratio: 0.72;
  --detail-reveal-card-radius: 1.25rem;
  --detail-reveal-card-pad: 1.75rem;

  --detail-reveal-card-bg: #f2f1ef;
  --detail-reveal-card-ink: #14171c;
  --detail-reveal-card-muted: #8a919c;
  --detail-reveal-card-accent: #4c5fd7;
  --detail-reveal-card-rule: rgba(20, 23, 28, 0.13);
  --detail-reveal-card-border: 1px solid rgba(20, 23, 28, 0.07);
  --detail-reveal-card-pill-bg: #fff;
  --detail-reveal-card-pill-ink: #3a3f47;

  --detail-reveal-card-shadow: 0 1px 2px rgba(20, 23, 28, 0.05);
  --detail-reveal-card-shadow-open: 0 26px 52px -26px rgba(20, 23, 28, 0.42);
  --detail-reveal-card-lift: -4px;

  --detail-reveal-card-font: "Plus Jakarta Sans", system-ui, sans-serif;
  --detail-reveal-card-mono: "JetBrains Mono", ui-monospace, monospace;
  --detail-reveal-card-title-size: 1.75rem;
  --detail-reveal-card-title-weight: 600;
  --detail-reveal-card-body-size: 0.9375rem;
  --detail-reveal-card-label-size: 0.75rem;
  --detail-reveal-card-label-tracking: 0.18em;
  --detail-reveal-card-micro-size: 0.6875rem;

  --detail-reveal-card-gap: 1rem;
  --detail-reveal-card-rise: 0.75rem;

  --detail-reveal-card-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --detail-reveal-card-duration: 420ms;
  --detail-reveal-card-stagger: 55ms;

  /* Rings are off in the base card — the --map modifier turns them on. They
     radiate from the same origin as the pin, so moving one moves both. */
  --detail-reveal-card-ring: transparent;
  --detail-reveal-card-pin-x: 64%;
  --detail-reveal-card-pin-y: 34%;
  --detail-reveal-card-pin-size: 0.5rem;
  --detail-reveal-card-ping-duration: 2.2s;

  --detail-reveal-card-art-opacity: 1;
  --detail-reveal-card-art-opacity-open: 0.45;
  --detail-reveal-card-rings:
    repeating-radial-gradient(
      circle at var(--detail-reveal-card-pin-x) var(--detail-reveal-card-pin-y),
      transparent 0 27px,
      var(--detail-reveal-card-ring) 27px 28px);
  --detail-reveal-card-art:
    linear-gradient(152deg, rgba(76, 95, 215, 0.18), transparent 58%),
    radial-gradient(72% 58% at 80% 10%, rgba(76, 95, 215, 0.12), transparent 70%),
    radial-gradient(60% 50% at 12% 88%, rgba(20, 23, 28, 0.06), transparent 72%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), transparent 52%);
  /* -------------------------------------------------------------------- */

  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  flex-direction: column;

  box-sizing: border-box;
  /* The width is what the card wants, not what it insists on. A phone column
     is narrower than 21rem, and a fixed width there pushes a scrollbar across
     the whole page rather than the card shrinking into its container. The
     ratio holds either way, so the card stays the same card. */
  width: var(--detail-reveal-card-width);
  max-width: 100%;
  aspect-ratio: var(--detail-reveal-card-ratio);
  padding: var(--detail-reveal-card-pad);

  background: var(--detail-reveal-card-bg);
  border: var(--detail-reveal-card-border);
  border-radius: var(--detail-reveal-card-radius);
  box-shadow: var(--detail-reveal-card-shadow);
  color: var(--detail-reveal-card-ink);
  font-family: var(--detail-reveal-card-font);
  text-decoration: none;

  transform: translateY(0);
  transition:
    transform var(--detail-reveal-card-duration) var(--detail-reveal-card-ease),
    box-shadow var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

/* --- artwork ---------------------------------------------------------- */

.detail-reveal-card__art {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    var(--detail-reveal-card-rings),
    var(--detail-reveal-card-art);
  opacity: var(--detail-reveal-card-art-opacity);
  transform: scale(1);
  transition:
    opacity var(--detail-reveal-card-duration) var(--detail-reveal-card-ease),
    transform var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

/* --- header ----------------------------------------------------------- */

.detail-reveal-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.detail-reveal-card__title {
  font-size: var(--detail-reveal-card-title-size);
  font-weight: var(--detail-reveal-card-title-weight);
  letter-spacing: -0.015em;
  line-height: 1.1;
}

.detail-reveal-card__pill {
  flex: none;
  padding: 0.4em 0.85em;
  border-radius: 999px;
  background: var(--detail-reveal-card-pill-bg);
  color: var(--detail-reveal-card-pill-ink);
  font-family: var(--detail-reveal-card-mono);
  font-size: var(--detail-reveal-card-micro-size);
  letter-spacing: 0.06em;
}

/* --- bottom panel ----------------------------------------------------- */

.detail-reveal-card__panel {
  margin-top: auto;
  display: flex;
  flex-direction: column;
}

.detail-reveal-card__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.detail-reveal-card__label {
  display: flex;
  align-items: baseline;
  font-family: var(--detail-reveal-card-mono);
  font-size: var(--detail-reveal-card-label-size);
  letter-spacing: var(--detail-reveal-card-label-tracking);
  text-transform: uppercase;
  color: var(--detail-reveal-card-muted);
  transition: color var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

/* Grows in from zero width, pushing the label right. */
.detail-reveal-card__mark {
  display: inline-block;
  width: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    width var(--detail-reveal-card-duration) var(--detail-reveal-card-ease),
    opacity calc(var(--detail-reveal-card-duration) / 2) ease;
}

.detail-reveal-card__arrow {
  flex: none;
  width: 1.125rem;
  height: 1.125rem;
  color: var(--detail-reveal-card-accent);
  opacity: 1;
  transform: translate(0, 0);
  transition:
    opacity calc(var(--detail-reveal-card-duration) / 2) ease,
    transform var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

/* --- the reveal ------------------------------------------------------- */

.detail-reveal-card__reveal {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

.detail-reveal-card__reveal-inner {
  min-height: 0;
  overflow: hidden;
}

.detail-reveal-card__kicker,
.detail-reveal-card__detail,
.detail-reveal-card__meta {
  opacity: 0;
  transform: translateY(var(--detail-reveal-card-rise));
  transition:
    opacity calc(var(--detail-reveal-card-duration) / 2) ease,
    transform var(--detail-reveal-card-duration) var(--detail-reveal-card-ease);
}

/* Optional mono micro-line at the top of the reveal. */
.detail-reveal-card__kicker {
  display: block;
  margin-top: calc(var(--detail-reveal-card-gap) * 0.9);
  font-family: var(--detail-reveal-card-mono);
  font-size: var(--detail-reveal-card-micro-size);
  letter-spacing: 0.08em;
  color: var(--detail-reveal-card-muted);
}

.detail-reveal-card__detail {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-top: var(--detail-reveal-card-gap);
  padding-top: var(--detail-reveal-card-gap);
  /* Hairline that fades out to the right — a border would draw a hard edge. */
  background-image: linear-gradient(to right, var(--detail-reveal-card-rule), transparent);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
  font-size: var(--detail-reveal-card-body-size);
  line-height: 1.45;
}

.detail-reveal-card__line--muted {
  color: var(--detail-reveal-card-muted);
}

.detail-reveal-card__meta {
  display: block;
  margin-top: calc(var(--detail-reveal-card-gap) * 1.5);
  font-family: var(--detail-reveal-card-mono);
  font-size: var(--detail-reveal-card-micro-size);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--detail-reveal-card-muted);
}

/* --- open state ------------------------------------------------------- */
/* Delays live here only, so leaving the card snaps back without a stagger. */

.detail-reveal-card:hover,
.detail-reveal-card:focus-visible,
.detail-reveal-card--open {
  transform: translateY(var(--detail-reveal-card-lift));
  box-shadow: var(--detail-reveal-card-shadow-open);
}

.detail-reveal-card:hover .detail-reveal-card__art,
.detail-reveal-card:focus-visible .detail-reveal-card__art,
.detail-reveal-card--open .detail-reveal-card__art {
  opacity: var(--detail-reveal-card-art-opacity-open);
  transform: scale(1.04);
}

.detail-reveal-card:hover .detail-reveal-card__reveal,
.detail-reveal-card:focus-visible .detail-reveal-card__reveal,
.detail-reveal-card--open .detail-reveal-card__reveal {
  grid-template-rows: 1fr;
}

.detail-reveal-card:hover .detail-reveal-card__label,
.detail-reveal-card:focus-visible .detail-reveal-card__label,
.detail-reveal-card--open .detail-reveal-card__label {
  color: var(--detail-reveal-card-ink);
}

.detail-reveal-card:hover .detail-reveal-card__mark,
.detail-reveal-card:focus-visible .detail-reveal-card__mark,
.detail-reveal-card--open .detail-reveal-card__mark {
  width: 1.35em;
  opacity: 1;
}

.detail-reveal-card:hover .detail-reveal-card__arrow,
.detail-reveal-card:focus-visible .detail-reveal-card__arrow,
.detail-reveal-card--open .detail-reveal-card__arrow {
  opacity: 0;
  transform: translate(0.5rem, -0.5rem);
}

.detail-reveal-card:hover .detail-reveal-card__kicker,
.detail-reveal-card:hover .detail-reveal-card__detail,
.detail-reveal-card:hover .detail-reveal-card__meta,
.detail-reveal-card:focus-visible .detail-reveal-card__kicker,
.detail-reveal-card:focus-visible .detail-reveal-card__detail,
.detail-reveal-card:focus-visible .detail-reveal-card__meta,
.detail-reveal-card--open .detail-reveal-card__kicker,
.detail-reveal-card--open .detail-reveal-card__detail,
.detail-reveal-card--open .detail-reveal-card__meta {
  opacity: 1;
  transform: translateY(0);
}

.detail-reveal-card:hover .detail-reveal-card__reveal-inner > :nth-child(1),
.detail-reveal-card:focus-visible .detail-reveal-card__reveal-inner > :nth-child(1),
.detail-reveal-card--open .detail-reveal-card__reveal-inner > :nth-child(1) {
  transition-delay: var(--detail-reveal-card-stagger);
}

.detail-reveal-card:hover .detail-reveal-card__reveal-inner > :nth-child(2),
.detail-reveal-card:focus-visible .detail-reveal-card__reveal-inner > :nth-child(2),
.detail-reveal-card--open .detail-reveal-card__reveal-inner > :nth-child(2) {
  transition-delay: calc(var(--detail-reveal-card-stagger) * 2);
}

.detail-reveal-card:hover .detail-reveal-card__reveal-inner > :nth-child(3),
.detail-reveal-card:focus-visible .detail-reveal-card__reveal-inner > :nth-child(3),
.detail-reveal-card--open .detail-reveal-card__reveal-inner > :nth-child(3) {
  transition-delay: calc(var(--detail-reveal-card-stagger) * 3);
}

.detail-reveal-card:hover .detail-reveal-card__reveal-inner > :nth-child(4),
.detail-reveal-card:focus-visible .detail-reveal-card__reveal-inner > :nth-child(4),
.detail-reveal-card--open .detail-reveal-card__reveal-inner > :nth-child(4) {
  transition-delay: calc(var(--detail-reveal-card-stagger) * 4);
}

.detail-reveal-card:focus-visible {
  outline: 2px solid var(--detail-reveal-card-ink);
  outline-offset: 3px;
}

/* --- map modifier ----------------------------------------------------- */
/* Turns the neutral wash into an abstract map: a duotone mesh, contour rings,
   and a pin. Add the __pin element to the markup to get the ambient pulse. */

.detail-reveal-card--map {
  --detail-reveal-card-bg: #eef1f4;
  --detail-reveal-card-accent: #ff5a3c;
  --detail-reveal-card-ring: rgba(20, 23, 28, 0.055);
  --detail-reveal-card-art-opacity-open: 0.28;
  --detail-reveal-card-art:
    radial-gradient(38% 30% at 64% 34%, rgba(255, 120, 90, 0.38), transparent 70%),
    radial-gradient(50% 40% at 28% 24%, rgba(90, 150, 220, 0.42), transparent 72%),
    radial-gradient(46% 42% at 80% 74%, rgba(60, 190, 178, 0.34), transparent 72%),
    radial-gradient(60% 50% at 40% 82%, rgba(120, 108, 224, 0.28), transparent 74%),
    radial-gradient(90% 70% at 50% 40%, rgba(255, 255, 255, 0.52), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.55), transparent 46%);
}

.detail-reveal-card__pin {
  position: absolute;
  top: var(--detail-reveal-card-pin-y);
  left: var(--detail-reveal-card-pin-x);
  width: var(--detail-reveal-card-pin-size);
  height: var(--detail-reveal-card-pin-size);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--detail-reveal-card-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--detail-reveal-card-accent) 20%, transparent);
}

/* The ambient ping — the only thing moving at rest. */
.detail-reveal-card__pin::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--detail-reveal-card-accent);
  animation: detail-reveal-card-ping var(--detail-reveal-card-ping-duration)
    var(--detail-reveal-card-ease) infinite;
}

@keyframes detail-reveal-card-ping {
  0% { transform: scale(1); opacity: 0.6; }
  70%, 100% { transform: scale(4.6); opacity: 0; }
}

/* --- dark modifier ---------------------------------------------------- */

.detail-reveal-card--dark {
  --detail-reveal-card-bg: #15171c;
  --detail-reveal-card-ink: #f3f4f6;
  --detail-reveal-card-muted: #838a95;
  --detail-reveal-card-accent: #8b9cff;
  --detail-reveal-card-rule: rgba(255, 255, 255, 0.14);
  --detail-reveal-card-border: 1px solid rgba(255, 255, 255, 0.08);
  --detail-reveal-card-pill-bg: rgba(255, 255, 255, 0.08);
  --detail-reveal-card-pill-ink: #d7dae0;
  --detail-reveal-card-art-opacity-open: 0.5;
  --detail-reveal-card-art:
    linear-gradient(152deg, rgba(120, 140, 255, 0.22), transparent 58%),
    radial-gradient(72% 58% at 80% 10%, rgba(120, 140, 255, 0.15), transparent 70%),
    radial-gradient(60% 50% at 12% 88%, rgba(255, 255, 255, 0.05), transparent 72%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 52%);
}

/* Two classes, so this wins over both --map and --dark regardless of order. */
.detail-reveal-card--map.detail-reveal-card--dark {
  --detail-reveal-card-accent: #ff7a5c;
  --detail-reveal-card-ring: rgba(255, 255, 255, 0.06);
  --detail-reveal-card-art-opacity-open: 0.42;
  --detail-reveal-card-art:
    radial-gradient(40% 32% at 64% 34%, rgba(255, 120, 90, 0.5), transparent 70%),
    radial-gradient(52% 42% at 26% 22%, rgba(70, 120, 210, 0.5), transparent 72%),
    radial-gradient(48% 44% at 82% 74%, rgba(40, 180, 168, 0.44), transparent 72%),
    radial-gradient(60% 52% at 42% 84%, rgba(120, 92, 232, 0.42), transparent 74%),
    radial-gradient(100% 80% at 50% 30%, rgba(255, 255, 255, 0.06), transparent 70%);
}

/* --- no hover to give -------------------------------------------------- */

/* The reveal is a hover behaviour, and a touch device has no hover to spend
   on it — left at that, the panel is unreachable on a phone and the card is
   just a title. `:active` gives it back to the press: the panel opens under
   the finger and closes when it lifts, which is the nearest honest equivalent
   of moving a pointer on and off. Kept behind `(hover: none)` so a mouse,
   which fires `:active` on the way to following the link, is untouched. */

@media (hover: none) {
  .detail-reveal-card:active {
    transform: translateY(var(--detail-reveal-card-lift));
    box-shadow: var(--detail-reveal-card-shadow-open);
  }

  .detail-reveal-card:active .detail-reveal-card__art {
    opacity: var(--detail-reveal-card-art-opacity-open);
    transform: scale(1.04);
  }

  .detail-reveal-card:active .detail-reveal-card__reveal {
    grid-template-rows: 1fr;
  }

  .detail-reveal-card:active .detail-reveal-card__label {
    color: var(--detail-reveal-card-ink);
  }

  .detail-reveal-card:active .detail-reveal-card__mark {
    width: 1.35em;
    opacity: 1;
  }

  .detail-reveal-card:active .detail-reveal-card__arrow {
    opacity: 0;
    transform: translate(0.5rem, -0.5rem);
  }

  .detail-reveal-card:active .detail-reveal-card__kicker,
  .detail-reveal-card:active .detail-reveal-card__detail,
  .detail-reveal-card:active .detail-reveal-card__meta {
    opacity: 1;
    transform: translateY(0);
  }

  /* No stagger on the way in here. A press is short, and content that arrives
     over 200ms of delays is still arriving when the finger lifts. */
}

/* --- reduced motion --------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .detail-reveal-card,
  .detail-reveal-card * {
    transition-duration: 1ms;
    transition-delay: 0ms;
  }
  .detail-reveal-card__pin::after {
    animation: none;
  }
}