/* ==========================================================================
   Mabu, Peanut & 张三 — A cabinet of three cats
   Editorial / zoological-journal aesthetic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght,SOFT,WONK@9..144,300..900,30..100,0..1&family=Newsreader:ital,opsz,wght@0,6..72,300..700;1,6..72,300..700&family=IBM+Plex+Mono:wght@300;400;500;600&family=Noto+Serif+SC:wght@400;500;700&family=Noto+Sans+SC:wght@400;500&display=swap');

:root {
  --paper: #f2ebe0;
  --paper-deep: #e8dfd0;
  --ink: #1f1a14;
  --ink-soft: #4a4239;
  --rule: #cfc3b0;
  --rule-soft: #ddd1bd;
  --mabu: #5c6b7a;
  --mabu-deep: #3d4855;
  --peanut: #c45b1f;
  --peanut-deep: #8f3f10;
  --zhangsan: #6b8e6e;
  --zhangsan-deep: #4a6a4e;
  --gold: #a8884f;

  --font-display: 'Fraunces', 'Noto Serif SC', 'Songti SC', 'Times New Roman', serif;
  --font-body: 'Newsreader', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'Noto Sans SC', ui-monospace, monospace;

  --shadow-card: 0 1px 2px rgba(31, 26, 20, 0.08), 0 8px 24px rgba(31, 26, 20, 0.12);
  --shadow-soft: 0 1px 3px rgba(31, 26, 20, 0.06);

  --measure: 64ch;
  --page-pad: clamp(1.25rem, 4vw, 3rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.1  0 0 0 0 0.08  0 0 0 0.32 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.55;
  font-feature-settings: 'ss01', 'liga';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--rule);
  transition:
    text-decoration-color 200ms ease,
    color 200ms ease;
}

a:hover {
  text-decoration-color: var(--ink);
}

/* ----- Page shell ------------------------------------------------------- */

.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.75rem 0 1.25rem;
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  animation: rise 600ms 80ms ease-out forwards;
}

.site-header .wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-variation-settings:
    'SOFT' 50,
    'WONK' 1;
  letter-spacing: -0.01em;
  line-height: 1;
}

.site-header .wordmark .amp {
  font-style: italic;
  color: var(--peanut);
  font-variation-settings:
    'SOFT' 100,
    'WONK' 1;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease;
}

.site-nav a[aria-current='page'] {
  border-bottom-color: var(--ink);
}

.site-nav a:hover {
  border-bottom-color: var(--peanut);
}

/* ----- Masthead (per page) --------------------------------------------- */

.masthead {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--rule);
}

.masthead .kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  opacity: 0;
  animation: rise 600ms 200ms ease-out forwards;
}

.masthead .kicker .dot {
  color: var(--peanut);
}

.masthead h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-variation-settings:
    'SOFT' 30,
    'WONK' 1,
    'opsz' 144;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0;
  opacity: 0;
  animation: rise 700ms 320ms ease-out forwards;
}

.masthead h1 em {
  font-style: italic;
  color: var(--mabu);
  font-variation-settings:
    'SOFT' 100,
    'WONK' 1,
    'opsz' 144;
}

.masthead .lede {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  max-width: var(--measure);
  color: var(--ink-soft);
  font-style: italic;
  margin: 0;
  opacity: 0;
  animation: rise 600ms 480ms ease-out forwards;
}

/* ----- Filter chips ----------------------------------------------------- */

.filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 1.75rem 0 1.25rem;
  opacity: 0;
  animation: rise 600ms 640ms ease-out forwards;
}

.filters .filters-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-right: 0.5rem;
}

.filter-chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  border-radius: 999px;
  transition:
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.filter-chip:hover {
  border-color: var(--ink);
}

.filter-chip:focus-visible {
  outline: 2px solid var(--peanut);
  outline-offset: 3px;
}

.filter-chip[aria-pressed='true'] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.filter-chip[data-cat='mabu'][aria-pressed='true'] {
  background: var(--mabu);
  border-color: var(--mabu);
}

.filter-chip[data-cat='peanut'][aria-pressed='true'] {
  background: var(--peanut);
  border-color: var(--peanut);
}

.filter-chip[data-cat='zhangsan'][aria-pressed='true'] {
  background: var(--zhangsan);
  border-color: var(--zhangsan);
}

/* ----- Gallery ---------------------------------------------------------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem 1.25rem;
  padding: 1.5rem 0 3rem;
}

.photo-tile {
  position: relative;
  grid-column: span 6;
  background: var(--paper-deep);
  padding: 0.9rem 0.9rem 2.4rem;
  box-shadow: var(--shadow-card);
  transform-origin: center;
  transition:
    transform 320ms cubic-bezier(0.2, 0.7, 0.2, 1),
    box-shadow 320ms ease;
  opacity: 0;
  animation: tile-in 700ms ease-out forwards;
  animation-delay: calc(800ms + var(--tile-index, 0) * 70ms);
  text-decoration: none;
  display: block;
  cursor: zoom-in;
}

.photo-tile:nth-child(odd) {
  transform: rotate(-0.6deg);
}

.photo-tile:nth-child(even) {
  transform: rotate(0.5deg);
}

.photo-tile:hover {
  transform: rotate(0) translateY(-3px);
  box-shadow:
    0 4px 12px rgba(31, 26, 20, 0.1),
    0 18px 36px rgba(31, 26, 20, 0.18);
}

.photo-tile:focus-visible {
  outline: 2px solid var(--peanut);
  outline-offset: 4px;
}

.photo-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
  background: var(--paper);
}

.photo-tile .fig-tag {
  position: absolute;
  left: 0.9rem;
  bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.photo-tile .fig-tag::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.photo-tile .fig-tag .cat-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.photo-tile[data-cat='mabu'] .cat-dot {
  background: var(--mabu);
}

.photo-tile[data-cat='peanut'] .cat-dot {
  background: var(--peanut);
}

.photo-tile[data-cat='zhangsan'] .cat-dot {
  background: var(--zhangsan);
}

.photo-tile.is-tall {
  grid-column: span 6;
}

.photo-tile.is-wide {
  grid-column: span 12;
}

.photo-tile.is-wide img {
  aspect-ratio: 16 / 9;
}

.photo-tile.is-hidden {
  display: none;
}

@media (min-width: 720px) {
  .gallery {
    gap: 1.5rem 1.75rem;
  }
  .photo-tile {
    grid-column: span 4;
  }
  .photo-tile.is-tall {
    grid-column: span 4;
    grid-row: span 2;
  }
  .photo-tile.is-tall img {
    aspect-ratio: 3 / 5;
  }
  .photo-tile.is-wide {
    grid-column: span 8;
  }
}

/* ----- Lightbox --------------------------------------------------------- */

.lightbox {
  border: none;
  padding: 0;
  background: transparent;
  max-width: min(96vw, 1100px);
  max-height: 94vh;
  margin: auto;
  color: var(--paper);
}

.lightbox::backdrop {
  background: rgba(15, 12, 8, 0.92);
  backdrop-filter: blur(4px);
}

.lightbox-frame {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 1rem;
  padding: 1.5rem;
  background: rgba(20, 16, 12, 0.6);
  border: 1px solid rgba(232, 223, 208, 0.18);
  border-radius: 4px;
}

.lightbox-image {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
}

.lightbox-image img {
  max-height: 78vh;
  max-width: 100%;
  object-fit: contain;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  background: var(--paper);
}

.lightbox-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(242, 235, 224, 0.78);
}

.lightbox-meta .caption {
  font-family: var(--font-body);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.95rem;
  color: rgba(242, 235, 224, 0.92);
}

.lightbox-controls {
  display: flex;
  gap: 0.5rem;
}

.lightbox-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 0.85rem;
  background: transparent;
  color: rgba(242, 235, 224, 0.9);
  border: 1px solid rgba(232, 223, 208, 0.28);
  border-radius: 999px;
  cursor: pointer;
  transition:
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease;
}

.lightbox-btn:hover {
  background: rgba(232, 223, 208, 0.1);
  border-color: rgba(232, 223, 208, 0.6);
}

.lightbox-btn:focus-visible {
  outline: 2px solid var(--peanut);
  outline-offset: 2px;
}

/* ----- Bios (about.html) ----------------------------------------------- */

.bio {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 3rem 0;
  border-bottom: 1px dashed var(--rule);
}

.bio:last-of-type {
  border-bottom: none;
}

.bio-portrait {
  position: relative;
  background: var(--paper-deep);
  padding: 1rem 1rem 3rem;
  box-shadow: var(--shadow-card);
  align-self: start;
}

.bio-portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.bio-portrait .stamp {
  position: absolute;
  bottom: 0.8rem;
  left: 1rem;
  right: 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.bio-portrait .stamp::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.bio-text {
  font-family: var(--font-body);
}

.bio-text .bio-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.4rem;
}

.bio-text h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-variation-settings:
    'SOFT' 50,
    'WONK' 1,
    'opsz' 144;
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.015em;
  margin: 0 0 1.4rem;
}

.bio-text h2 em {
  font-style: italic;
}

.bio-text .lede {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin: 0 0 1.5rem;
}

.bio-text p {
  max-width: var(--measure);
  margin: 0 0 1.1rem;
}

.bio-text p.dropcap::first-letter {
  font-family: var(--font-display);
  font-size: 4.2em;
  line-height: 0.85;
  float: left;
  padding: 0.3rem 0.6rem 0 0;
  font-weight: 500;
  font-variation-settings:
    'SOFT' 50,
    'WONK' 1;
}

.bio-text .traits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin: 1.5rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--rule);
}

.bio-text .traits dt {
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
}

.bio-text .traits dd {
  margin: 0 0 0.4rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
}

.bio[data-cat='mabu'] .bio-text h2 em,
.bio[data-cat='mabu'] .bio-portrait .stamp .dot {
  color: var(--mabu);
}

.bio[data-cat='peanut'] .bio-text h2 em,
.bio[data-cat='peanut'] .bio-portrait .stamp .dot {
  color: var(--peanut);
}

.bio[data-cat='zhangsan'] .bio-text h2 em,
.bio[data-cat='zhangsan'] .bio-portrait .stamp .dot {
  color: var(--zhangsan);
}

@media (min-width: 760px) {
  .bio {
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
    padding: 4rem 0;
  }
  .bio[data-cat='peanut'] {
    grid-template-columns: 7fr 5fr;
  }
  .bio[data-cat='peanut'] .bio-portrait {
    order: 2;
  }
}

/* ----- AI companions page ---------------------------------------------- */

.disclosure {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  margin: 2rem 0 1rem;
  background: var(--paper-deep);
  border-left: 4px solid var(--peanut);
}

.disclosure .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--peanut-deep);
  margin: 0 0 0.3rem;
}

.disclosure p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.98rem;
  color: var(--ink-soft);
  max-width: 70ch;
}

.companions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding: 2rem 0 4rem;
}

.companion {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--paper-deep);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.companion::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid var(--rule);
  pointer-events: none;
}

.companion-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  background: var(--paper);
  border: 1px dashed var(--rule);
}

.sprite {
  width: 192px;
  height: 208px;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  transform: scale(1.6);
  transform-origin: center;
  filter: drop-shadow(0 12px 16px rgba(31, 26, 20, 0.18));
}

.companion-meta {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.companion-meta .name {
  font-family: var(--font-display);
  font-weight: 400;
  font-variation-settings:
    'SOFT' 50,
    'WONK' 1,
    'opsz' 144;
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.015em;
  margin: 0;
}

.companion[data-cat='mabu'] .companion-meta .name em {
  color: var(--mabu);
  font-style: italic;
}

.companion[data-cat='peanut'] .companion-meta .name em {
  color: var(--peanut);
  font-style: italic;
}

.companion[data-cat='zhangsan'] .companion-meta .name em {
  color: var(--zhangsan);
  font-style: italic;
}

.companion.is-pending {
  opacity: 0.78;
}

.companion.is-pending .companion-stage {
  background: repeating-linear-gradient(
    45deg,
    var(--paper),
    var(--paper) 12px,
    var(--paper-deep) 12px,
    var(--paper-deep) 24px
  );
}

.companion .pending-mark {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.5rem 0.9rem;
  border: 1px dashed var(--zhangsan);
  background: var(--paper);
  border-radius: 999px;
}

.companion-meta .desc {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0;
}

.companion-controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

@media (min-width: 800px) {
  .companion {
    grid-template-columns: 1fr 1.1fr;
    gap: 2.5rem;
    padding: 2.5rem;
  }
  .companion-stage {
    min-height: 380px;
  }
}

/* ----- Footer ----------------------------------------------------------- */

.site-footer {
  margin-top: 3rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: baseline;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.site-footer .colophon {
  font-family: var(--font-body);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* ----- Empty state ------------------------------------------------------ */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-soft);
}

/* ----- Animations ------------------------------------------------------- */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes tile-in {
  from {
    opacity: 0;
    transform: translateY(14px) rotate(0);
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms;
    animation-iteration-count: 1;
    transition-duration: 0.001ms;
    scroll-behavior: auto;
  }
}