/* ── Other Projects: "Gallery Exhibit" cards ───────────────────
   Every screenshot sits in the same 16:10 plate, so every card in a
   row has the same height. Two screenshots stack (front + one behind)
   and fan out on hover. Depth comes from CSS 3D only:
     card     perspective(1000px) rotateX(--rx) rotateY(--ry) translateY(--lift)
     plate    translateZ(26px)        body / footer  translateZ(10px)
   controller/card-tilt.js feeds --rx/--ry/--mx/--my on fine pointers.
   controller/project-discovery-demo.js keeps priority: this file loads
   BEFORE project-discovery.css, and its .is-pdemo-* rules win ties.
   Markup: controller/main.js → renderProjectCard()
   ──────────────────────────────────────────────────────────── */

:root {
  --xp-radius: 16px;
  --xp-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --xp-mat-a: #EEF2F8;
  --xp-mat-b: #E2E9F3;
  --xp-mat-glow: rgba(14, 116, 144, 0.10);
  --xp-shot-bar: #E9EDF3;
  --xp-shot-bar-line: #D8DEE8;
  --xp-chip-bg: #F1F5F9;
  --xp-shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 12px 32px rgba(15, 23, 42, 0.07);
  --xp-shadow-hot: 0 2px 4px rgba(15, 23, 42, 0.06), 0 34px 70px -18px rgba(15, 23, 42, 0.28);
  --xp-sheen: rgba(255, 255, 255, 0.55);
  --xp-shot-shadow: 0 14px 30px -8px rgba(15, 23, 42, 0.35);
}

[data-theme="dark"] {
  --xp-mat-a: #1B2740;
  --xp-mat-b: #131D31;
  --xp-mat-glow: rgba(34, 211, 238, 0.10);
  --xp-shot-bar: #2A3650;
  --xp-shot-bar-line: #344360;
  --xp-chip-bg: #233148;
  --xp-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.28);
  --xp-shadow-hot: 0 2px 4px rgba(0, 0, 0, 0.35), 0 34px 70px -18px rgba(0, 0, 0, 0.7);
  --xp-sheen: rgba(186, 230, 253, 0.2);
  --xp-shot-shadow: 0 14px 30px -8px rgba(0, 0, 0, 0.6);
}

/* ── Filter row ─────────────────────────────────────────────── */
.xp-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  margin: 2px 0 20px;
}

.xp-filters[hidden] { display: none; }

.xp-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.xp-filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.xp-filter:hover {
  color: var(--color-primary);
  border-color: var(--color-muted);
}

.xp-filter:focus-visible {
  outline: 2px solid var(--color-accent-text);
  outline-offset: 2px;
}

.xp-filter[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
}

.xp-filter-count {
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  opacity: 0.72;
}

.xp-filter-status {
  font-size: 12.5px;
  color: var(--color-muted);
  min-height: 1em;
}

/* ── Grid ───────────────────────────────────────────────────── */
#projects-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

/* `hidden` must beat .card { display: flex } */
#projects-grid > .card[hidden] {
  display: none !important;
}

/* ── Card shell (3D container: no overflow:hidden here) ────── */
#projects-grid > .card.xp-card {
  --rx: 0deg;
  --ry: 0deg;
  --lift: 0px;
  --mx: 50%;
  --my: 30%;
  position: relative;
  padding: 0;
  gap: 0;
  border-radius: var(--xp-radius);
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: var(--xp-shadow);
  /* 2D by default (touch, coarse pointers): no 3D context, no extra
     compositing layers. Fine pointers get the 3D version below. */
  transform: translateY(var(--lift));
  transition:
    transform 0.55s var(--xp-ease),
    box-shadow 0.45s ease,
    border-color 0.3s ease;
}

/* While the pointer drives the tilt, track it closely. */
#projects-grid > .card.xp-card.is-tilting {
  transition:
    transform 0.14s linear,
    box-shadow 0.45s ease,
    border-color 0.3s ease;
}

@media (hover: hover) {
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover {
    --lift: -6px;
    background: var(--color-card);
    box-shadow: var(--xp-shadow-hot);
    border-color: color-mix(in srgb, var(--color-accent) 50%, var(--color-border));
  }
}

#projects-grid:not(.is-pdemo-stage) > .card.xp-card:focus-visible {
  --lift: -6px;
  outline: 2px solid var(--color-accent-text);
  outline-offset: 3px;
  box-shadow: var(--xp-shadow-hot);
}

#projects-grid:not(.is-pdemo-stage) > .card.xp-card:active {
  --lift: -2px;
}

/* ── Media plate ────────────────────────────────────────────── */
.xp-media {
  position: relative;
  aspect-ratio: 16 / 10;
  margin: 10px 10px 0;
  border-radius: 10px;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
  background:
    radial-gradient(120% 90% at 20% 0%, var(--xp-mat-glow), transparent 60%),
    linear-gradient(160deg, var(--xp-mat-a), var(--xp-mat-b));
}

/* A screenshot: window bar + the 16:10 image, shown whole. */
.xp-shot {
  position: absolute;
  left: 9%;
  right: 9%;
  top: 10%;
  margin: 0;
  border-radius: 7px;
  overflow: hidden;
  background: var(--color-card);
  box-shadow: var(--xp-shot-shadow);
  transition: transform 0.65s var(--xp-ease), opacity 0.4s ease;
}

.xp-shot::before {
  content: "";
  display: block;
  height: 10px;
  background-color: var(--xp-shot-bar);
  border-bottom: 1px solid var(--xp-shot-bar-line);
  background-image:
    radial-gradient(circle, #F87171 2px, transparent 2.4px),
    radial-gradient(circle, #FBBF24 2px, transparent 2.4px),
    radial-gradient(circle, #34D399 2px, transparent 2.4px);
  background-size: 10px 10px;
  background-repeat: no-repeat;
  background-position: 5px 0, 14px 0, 23px 0;
}

.xp-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.8s var(--xp-ease);
}

/* Single screenshot: centred a little lower. */
.xp-media:not(.xp-media--stack) .xp-shot {
  left: 8%;
  right: 8%;
  top: 7%;
}

/* Stack: the second screenshot peeks out behind, up and to the left. */
.xp-media--stack .xp-shot--front {
  left: 13%;
  right: 7%;
  top: 11%;
  z-index: 1;
}

.xp-media--stack .xp-shot--back {
  left: 13%;
  right: 7%;
  top: 11%;
  z-index: 0;
  opacity: 0.85;
  filter: saturate(0.85);
  transform: translate(-7%, -9%) rotate(-3deg) scale(0.92);
}

.xp-count {
  position: absolute;
  right: 9px;
  bottom: 9px;
  z-index: 3;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.66);
  color: #FFFFFF;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  pointer-events: none;
}

/* Light sheen that follows the pointer (fine pointers only). */
.xp-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(420px circle at var(--mx) var(--my), var(--xp-sheen), transparent 42%);
  transition: opacity 0.3s ease;
}

#projects-grid > .card.xp-card.is-tilting .xp-media::after {
  opacity: 1;
}

/* Hover / keyboard focus: the stack fans out. */
@media (hover: hover) {
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--back {
    opacity: 1;
    transform: translate(-13%, -12%) rotate(-7deg) scale(0.9);
  }
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--front {
    transform: translate(3%, -3%) rotate(1.5deg);
  }
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--front img {
    transform: scale(1.04);
  }
}

#projects-grid:not(.is-pdemo-stage) > .card.xp-card:focus-visible .xp-shot--back {
  opacity: 1;
  transform: translate(-13%, -12%) rotate(-7deg) scale(0.9);
}

#projects-grid:not(.is-pdemo-stage) > .card.xp-card:focus-visible .xp-shot--front {
  transform: translate(3%, -3%) rotate(1.5deg);
}

/* ── Body ───────────────────────────────────────────────────── */
.xp-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px 4px;
}

.xp-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.card-kicker.xp-kicker {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.xp-index {
  flex: none;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.card-title.xp-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.xp-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.xp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: auto 0 0;      /* pins the footer to the bottom of the card */
  padding: 6px 0 0;
  list-style: none;
}

.xp-tag {
  padding: 2px 9px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--xp-chip-bg);
  color: var(--color-muted);
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1.6;
}

/* ── Footer ─────────────────────────────────────────────────── */
#projects-grid > .card.xp-card .xp-foot {
  margin: 12px 18px 0;
  padding: 12px 0 14px;
  border-top: 1px solid var(--color-border);
}

.xp-foot .card-details-cue {
  font-size: 13px;
}

#projects-grid > .card.xp-card .xp-foot {
  flex-wrap: wrap;
  row-gap: 10px;
}

.xp-links {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 6px;
  margin-left: auto;
}

.xp-links .link-pill {
  white-space: nowrap;
}

/* ── 3D: only where a fine pointer can drive it ────────────────
   Layered depth: the plate sits 26px in front of the card, the text
   10px, so a tilt moves them at different rates (parallax).        */
@media (hover: hover) and (pointer: fine) {
  #projects-grid > .card.xp-card {
    transform: perspective(1000px) rotateX(var(--rx)) rotateY(var(--ry)) translateY(var(--lift));
    transform-style: preserve-3d;
  }
  .xp-media {
    transform: translateZ(26px);
  }
  .xp-body,
  #projects-grid > .card.xp-card .xp-foot {
    transform: translateZ(10px);
  }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 960px) {
  #projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (max-width: 600px) {
  #projects-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
  .xp-filter {
    min-height: 40px;
  }
  .xp-filters {
    margin-bottom: 16px;
  }
  /* One card per row leaves room for the full label (design.css hides it
     below 420px for tighter layouts), and a finger-sized target. */
  .xp-links .view-repo-label {
    display: inline;
  }
  .xp-links .link-pill,
  .xp-foot .card-details-cue {
    min-height: 40px;
  }
}

/* ── Reduced motion: no transforms, colour feedback only ────── */
@media (prefers-reduced-motion: reduce) {
  #projects-grid > .card.xp-card,
  #projects-grid > .card.xp-card.is-tilting {
    transform: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }
  .xp-media,
  .xp-body,
  #projects-grid > .card.xp-card .xp-foot {
    transform: none;
  }
  .xp-shot,
  .xp-shot img,
  .xp-media::after {
    transition: none;
  }
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--back,
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:focus-visible .xp-shot--back {
    opacity: 0.85;
    transform: translate(-7%, -9%) rotate(-3deg) scale(0.92);
  }
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--front,
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:focus-visible .xp-shot--front,
  #projects-grid:not(.is-pdemo-stage) > .card.xp-card:hover .xp-shot--front img {
    transform: none;
  }
  .xp-media::after {
    display: none;
  }
}

/* View Transitions (filter swaps): a quick, quiet cross-fade/morph. */
::view-transition-group(*) {
  animation-duration: 0.38s;
  animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}