/* =========================================================
   Project dossier — immersive case study
   ========================================================= */

.case {
  padding-top: calc(var(--nav-h) + 2rem);
}
.case-back {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  transition: color 0.3s;
}
.case-back:hover {
  color: var(--fg);
}
.case-back .arrow {
  display: inline-block;
  transition: transform 0.4s var(--ease-snap);
}
.case-back:hover .arrow {
  transform: translateX(-0.3rem);
}

/* ---------- Hero ---------- */
.case-hero {
  display: grid;
  gap: 2rem;
  padding-block: 2.5rem clamp(2rem, 5vw, 4rem);
}
.case-kicker {
  color: var(--accent);
}
.case-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9.5vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.88;
  font-variation-settings: var(--display-settings);
  margin-top: 0.75rem;
  overflow-wrap: anywhere;
}
.case-oneliner {
  max-width: 36em;
}
.case-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.case-meta dt {
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.case-meta dd {
  margin: 0;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.case-meta dd.chips {
  gap: 0.35rem;
}
.case-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
@media (min-width: 900px) {
  .case-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
    gap: 4rem;
  }
  .case-meta {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-hero-side {
    display: grid;
    gap: 2rem;
  }
}

/* ---------- Cover ---------- */
.case-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.case-cover--terminal {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 7;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.6vw, 1.1rem);
  padding: 2rem;
}
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .case-cover img {
      animation: cover-zoom linear both;
      animation-timeline: view();
      animation-range: entry 0% exit 100%;
    }
    @keyframes cover-zoom {
      from {
        transform: scale(1.12) translateY(-3%);
      }
      to {
        transform: scale(1) translateY(3%);
      }
    }
  }
}

/* ---------- Metrics ---------- */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-block: clamp(2rem, 5vw, 4rem);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}
.case-metric {
  display: grid;
  gap: 0.35rem;
  padding: 1.5rem;
  background: var(--bg);
  transition: background-color var(--t-tone);
}
.case-metric b {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
}
.case-metric span {
  color: var(--muted);
}
@media (min-width: 700px) {
  .case-metrics {
    grid-template-columns: repeat(var(--n, 4), 1fr);
  }
}

/* ---------- Story ---------- */
.case-story {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  margin-top: clamp(2rem, 5vw, 4rem);
}
.story-step {
  display: grid;
  gap: 1rem;
  padding-block: clamp(2rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}
.story-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}
.story-num {
  color: var(--accent);
}
.story-title {
  font-family: var(--font-display);
  font-size: var(--fs-title);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}
.story-body {
  font-size: var(--fs-lead);
  line-height: 1.45;
  letter-spacing: -0.01em;
  max-width: 34em;
  text-wrap: pretty;
}
@media (min-width: 900px) {
  .story-step {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
    gap: 4rem;
  }
  .story-head {
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
    align-self: start;
  }
}

/* ---------- Decisions ---------- */
.case-section {
  padding-block: clamp(3rem, 7vw, 6rem);
}
.case-section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}
.case-section-title {
  font-family: var(--font-display);
  font-size: var(--fs-title);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}
.decisions {
  display: grid;
  gap: 1rem;
}
.decision {
  position: relative;
  display: grid;
  gap: 0.75rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  transition: border-color 0.4s;
}
.decision::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.8s var(--ease-out);
}
.decision.is-in::before {
  transform: none;
}
.decision:hover {
  border-color: var(--line-strong);
}
.decision h3 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.1;
  color: var(--accent);
}
.decision p {
  color: var(--fg);
  max-width: 44em;
}
@media (min-width: 900px) {
  .decisions {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

/* ---------- Architecture ---------- */
.arch {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}
.arch div {
  display: grid;
  gap: 0.4rem;
  padding: 1.25rem;
  background: var(--bg);
  transition: background-color var(--t-tone);
}
.arch code {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
}
.arch span {
  color: var(--muted);
  font-size: 0.95rem;
}
@media (min-width: 700px) {
  .arch {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- Demo ---------- */
.demo {
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  background: var(--surface);
}
.demo-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.demo-bar .dots {
  display: inline-flex;
  gap: 0.35rem;
}
.demo-bar .dots i {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--line-strong);
}
.demo-bar .dots i:first-child {
  background: var(--accent);
}
.demo-body {
  padding: clamp(1.25rem, 3vw, 2.5rem);
}
.demo-hint {
  color: var(--muted);
  margin-bottom: 1.25rem;
  max-width: 44em;
}
.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}
.demo-btn {
  height: 2.5rem;
  padding-inline: 1rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  transition: background-color 0.3s, color 0.3s, transform 0.3s var(--ease-snap), opacity 0.3s;
}
.demo-btn:hover:not(:disabled) {
  background: var(--fg);
  color: var(--bg);
}
.demo-btn:active:not(:disabled) {
  transform: scale(0.96);
}
.demo-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.demo-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}
.demo-btn.primary:hover:not(:disabled) {
  background: var(--fg);
  border-color: var(--fg);
}

/* Terminal look */
.term {
  background: var(--ink);
  color: var(--paper);
  border-radius: 0.75rem;
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  min-height: 12rem;
  max-height: 22rem;
  overflow: auto;
  scrollbar-width: thin;
}
.term .cmd {
  color: #ff6b61;
}
.term .ok {
  color: #7be0a8;
}
.term .dim {
  color: #8f8a80;
}
.term .warn {
  color: #ffcc33;
}
.term .cursor-blink {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  background: var(--paper);
  vertical-align: -0.15em;
}
@media (prefers-reduced-motion: no-preference) {
  .term .cursor-blink {
    animation: blink 1s steps(2) infinite;
  }
  @keyframes blink {
    to {
      opacity: 0;
    }
  }
}
.term .bar {
  display: inline-block;
  width: 16ch;
  height: 0.7em;
  border: 1px solid #8f8a80;
  vertical-align: middle;
  position: relative;
  margin-inline: 0.5ch;
}
.term .bar i {
  position: absolute;
  inset: 0;
  background: #ff6b61;
  transform-origin: left;
  transform: scaleX(var(--p, 0));
  transition: transform 0.2s linear;
}

/* Power4 */
.p4 {
  display: grid;
  gap: 1rem;
  justify-items: start;
}
.p4-status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 1.5rem;
}
.p4-token {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--accent);
}
.p4-token.p2 {
  background: var(--fg);
}
.p4-board {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.35rem;
  padding: 0.6rem;
  border-radius: 0.9rem;
  background: var(--ink);
  width: min(100%, 26rem);
}
.p4-col {
  display: grid;
  gap: 0.35rem;
  padding: 0;
  border-radius: 0.5rem;
  transition: background-color 0.2s;
}
.p4-col:hover:not(:disabled),
.p4-col:focus-visible {
  background: rgba(255, 255, 255, 0.07);
}
.p4-cell {
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(242, 237, 227, 0.1);
  position: relative;
  overflow: hidden;
}
.p4-cell::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  transform: translateY(-400%);
  background: transparent;
}
.p4-cell.p1::after {
  background: var(--red);
  transform: none;
}
.p4-cell.p2::after {
  background: var(--paper);
  transform: none;
}
@media (prefers-reduced-motion: no-preference) {
  .p4-cell.p1.drop::after,
  .p4-cell.p2.drop::after {
    animation: p4drop 0.45s var(--ease-out);
  }
  @keyframes p4drop {
    from {
      transform: translateY(calc(-100% * var(--rows, 6)));
    }
    to {
      transform: none;
    }
  }
}
.p4-cell.win {
  box-shadow: inset 0 0 0 3px #ffcc33;
}

/* Pokeworld */
.pk {
  display: grid;
  gap: 1rem;
}
.pk-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.pk-card {
  display: grid;
  gap: 0.5rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
}
.pk-card b {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.pk-gauge {
  height: 0.5rem;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}
.pk-gauge i {
  display: block;
  height: 100%;
  background: var(--accent);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.pk-gauge.mana i {
  background: #3d63ff;
}
.pk-gauge.enemy i {
  background: var(--fg);
}
.pk-lvl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Workflow */
.wf {
  display: grid;
  gap: 1.5rem;
}
.wf-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}
.wf-step {
  position: relative;
  display: grid;
  gap: 0.35rem;
  padding: 0.9rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  transition: border-color 0.3s, background-color 0.3s;
  min-height: 5.5rem;
}
.wf-step .n {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
}
.wf-step .l {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 0.9rem;
}
.wf-step.is-active {
  border-color: var(--accent);
  background: var(--surface);
}
.wf-step.is-done .l::after {
  content: ' ✓';
  color: var(--accent);
}
.wf-doc {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  width: fit-content;
}
.wf-compare {
  display: grid;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.wf-compare label {
  display: grid;
  gap: 0.5rem;
  color: var(--muted);
}
.wf-compare input[type='range'] {
  width: 100%;
  accent-color: var(--accent);
}
.wf-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.wf-col {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
}
.wf-col.win {
  border-color: var(--accent);
}
.wf-col b {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
}
.wf-col span {
  color: var(--muted);
  font-size: 0.85rem;
}
.wf-col .delta {
  color: var(--accent);
  font-weight: 600;
}
@media (max-width: 600px) {
  .wf-flow {
    grid-template-columns: 1fr 1fr;
  }
}

/* One Rule mini */
.or {
  display: grid;
  gap: 1.25rem;
}
.or-rule {
  display: inline-flex;
  width: fit-content;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
}
.or-stage {
  display: grid;
  gap: 0.75rem;
  justify-items: center;
  padding: 2rem 1rem;
  border-radius: 1rem;
  background: var(--ink);
  color: var(--paper);
}
.or-order {
  width: 8rem;
  height: 8rem;
  border-radius: 1.25rem;
  border: 2px solid rgba(242, 237, 227, 0.25);
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  font-variation-settings: var(--display-settings);
  color: var(--paper);
  transition: transform 0.15s var(--ease-snap), background-color 0.2s, border-color 0.2s;
}
.or-order:not(:disabled):hover {
  transform: scale(1.04);
  border-color: var(--paper);
}
.or-order:disabled {
  opacity: 0.6;
  cursor: default;
}
.or-order.hit {
  background: #2e8b57;
  border-color: #2e8b57;
  opacity: 1;
}
.or-order.trap {
  background: #b3261e;
  border-color: #b3261e;
  opacity: 1;
}
.or-bar {
  width: 8rem;
  height: 3px;
  background: rgba(242, 237, 227, 0.2);
  overflow: hidden;
  border-radius: 2px;
}
.or-bar i {
  display: block;
  height: 100%;
  background: var(--red);
  transform-origin: left;
}
.or-status {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
}
.or-status b {
  color: var(--accent);
}
.or-msg {
  color: var(--muted);
  min-height: 1.5em;
}
.or-msg.ok {
  color: #2e8b57;
}
.or-msg.bad {
  color: #b3261e;
}

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(85vw, 56rem);
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  margin-inline: calc(-1 * var(--gutter));
  padding-inline: var(--gutter);
  scroll-padding-inline: var(--gutter);
  padding-bottom: 1rem;
  scrollbar-width: none;
}
.gallery::-webkit-scrollbar {
  display: none;
}
.gallery figure {
  scroll-snap-align: start;
  display: grid;
  gap: 0.75rem;
}
.gallery .frame {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
}
.gallery .frame img {
  object-position: top;
}
.gallery .frame--tall img {
  object-fit: contain;
  background: var(--bg-2);
}
.gallery figcaption {
  color: var(--muted);
}
.gallery-nav {
  display: flex;
  gap: 0.5rem;
}
.gallery-nav button {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  transition: background-color 0.3s, color 0.3s;
}
.gallery-nav button:hover {
  background: var(--fg);
  color: var(--bg);
}
.gallery-nav svg {
  width: 1rem;
  height: 1rem;
}

/* ---------- Next ---------- */
.case-next {
  display: block;
  padding-block: clamp(4rem, 10vw, 8rem);
  border-top: 1px solid var(--line);
}
.case-next .mono {
  color: var(--muted);
  display: block;
  margin-bottom: 1rem;
}
.case-next-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 11vw, 10rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.9;
  display: inline-flex;
  align-items: center;
  gap: 0.15em;
  transition: color 0.3s;
}
.case-next:hover .case-next-title {
  color: var(--accent);
}
.case-next-title .arrow {
  font-size: 0.55em;
  transition: transform 0.5s var(--ease-snap);
}
.case-next:hover .case-next-title .arrow {
  transform: translateX(0.3em);
}
.case-next .hook {
  display: block;
  margin-top: 1rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--muted);
}

.case-notfound {
  padding: 6rem var(--gutter);
  display: grid;
  gap: 1.5rem;
  min-height: 70svh;
  align-content: center;
}