/* =========================================================
   Ruby Wu — Portfolio
   Design system: warm paper, editorial grotesque + serif accents
   ========================================================= */

/* ----- Reset ----- */
*,
*::before,
*::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
img, picture, video { display: block; max-width: 100%; }
button, input, a { font: inherit; color: inherit; }
a { text-decoration: none; }
ul { list-style: none; }

/* ----- Tokens ----- */
:root {
  /* Warm paper palette (mood: Isle of Echo + 余白) */
  --paper:        #F7F6F3;
  --paper-2:      #EFEDE7;
  --paper-3:      #E7E4DC;
  --ink:          #211E1A;
  --ink-soft:     #4B463F;
  --muted:        #8C857B;
  --muted-2:      #A8A196;
  --hair:         #E2DED6;
  --hair-strong:  #D2CCC1;

  --font-sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", Georgia, serif;

  /* Fluid type scale */
  --fs-mega:  clamp(4.5rem, 15vw, 13rem);
  --fs-hero:  clamp(3.25rem, 9vw, 8.5rem);
  --fs-h1:    clamp(2.25rem, 5.2vw, 4rem);
  --fs-h2:    clamp(1.75rem, 3.4vw, 2.9rem);
  --fs-title: clamp(1.5rem, 2.6vw, 2.15rem);
  --fs-lead:  clamp(1.25rem, 2vw, 1.7rem);
  --fs-body:  1.0625rem;
  --fs-meta:  0.8125rem;

  /* Spacing */
  --pad-x: clamp(1.25rem, 5vw, 5rem);
  --gap:   clamp(1.5rem, 3vw, 3rem);
  --sec:   clamp(5rem, 12vw, 11rem);
  --maxw:  1500px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.7s;
}

/* ----- Base ----- */
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01" on;
  overflow-x: clip;
}

::selection { background: var(--ink); color: var(--paper); }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad-x); }

/* ----- Typography helpers ----- */
.serif { font-family: var(--font-serif); font-weight: 400; }
.italic { font-style: italic; }

.eyebrow {
  font-size: var(--fs-meta);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.display {
  font-size: var(--fs-hero);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 500;
}

h1, h2, h3 { font-weight: 500; letter-spacing: -0.02em; line-height: 1.05; }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.32;
  letter-spacing: -0.01em;
  text-wrap: balance;
  color: var(--ink);
}

.tnum { font-variant-numeric: tabular-nums; }

/* =========================================================
   Navigation
   ========================================================= */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 130;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(1rem, 2vw, 1.6rem) var(--pad-x);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--hair);
}
body.menu-open .nav { background: transparent; border-bottom-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.nav__logo {
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 1.0625rem;
}
.nav__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--ink);
  position: relative;
}
.nav__plus {
  position: relative;
  width: 15px; height: 15px;
  flex: none;
  transition: transform 0.5s var(--ease);
}
.nav__plus::before, .nav__plus::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: currentColor;
}
.nav__plus::before { width: 100%; height: 1.5px; transform: translate(-50%, -50%); }
.nav__plus::after  { width: 1.5px; height: 100%; transform: translate(-50%, -50%); }
body.menu-open .nav__plus { transform: rotate(135deg); }

/* Menu overlay */
.menu {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--pad-x);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}
body.menu-open .menu { opacity: 1; visibility: visible; }
body.menu-open { overflow: hidden; }
.menu__links { display: flex; flex-direction: column; gap: clamp(0.4rem, 1.5vh, 1rem); }
.menu__links a {
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  letter-spacing: -0.035em;
  line-height: 1.04;
  color: var(--ink);
  width: max-content;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease), color 0.3s var(--ease);
}
body.menu-open .menu__links a { opacity: 1; transform: none; }
body.menu-open .menu__links a:nth-child(1) { transition-delay: 0.08s; }
body.menu-open .menu__links a:nth-child(2) { transition-delay: 0.14s; }
body.menu-open .menu__links a:nth-child(3) { transition-delay: 0.20s; }
.menu__links a:hover { color: var(--muted); }
.menu__meta {
  margin-top: clamp(2.5rem, 7vh, 5rem);
  display: flex; gap: clamp(1.5rem, 4vw, 3rem); flex-wrap: wrap;
  color: var(--muted); font-size: var(--fs-meta);
  letter-spacing: 0.04em;
}
.menu__meta a { color: var(--muted); }
.menu__meta a:hover { color: var(--ink); }

/* =========================================================
   Hero (home)
   ========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: #f4f3f0;   /* light base; the shader flows over this */
}
/* Flowing "Wave Gradient" shader canvas (full-bleed background) */
.hero__shader {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.42;
  pointer-events: none;
  display: block;
}
.hero__inner {
  position: relative;   /* sits above the shader canvas via paint order (no stacking context) */
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(6rem, 12vh, 9rem) var(--pad-x) clamp(2.5rem, 6vh, 5rem);
}
.hero__top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--gap);
  flex-wrap: wrap;
}
.hero__name {
  font-size: clamp(4rem, 13.5vw, 13rem);
  line-height: 0.82;
  letter-spacing: -0.05em;
  font-weight: 500;
}
/* Word reveal — each line masks its word sliding up on load */
.hero__name .line { display: block; overflow: hidden; padding-bottom: 0.04em; }
.hero__name .word {
  display: inline-block;
  transform: translateY(115%);
  animation: wordUp 0.95s var(--ease) forwards;
}
.hero__name .line:nth-child(2) .word { animation-delay: 0.1s; }
@keyframes wordUp { to { transform: translateY(0); } }
.hero__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  max-width: 260px;
  padding-bottom: 0.5rem;
}
.hero__thumb {
  position: relative;
  width: clamp(180px, 15vw, 220px);
  aspect-ratio: 5 / 6;
  flex: none;   /* no card, no outline — the object floats on the flow */
}
.hero__thumb-slot {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.55s var(--ease);
}
.hero__thumb-slot.is-active { opacity: 1; }
.hero__thumb-slot img {
  width: 100%; height: 100%;
  object-fit: contain;         /* show the whole object/photo, never cropped */
  object-position: center;
  display: block;
}
/* floating cutouts get a soft grounding shadow; faded photo cards blend on their own */
.hero__thumb-slot.is-cut img { filter: drop-shadow(0 9px 14px rgba(33, 30, 26, 0.09)); }
.hero__thumb-slot.is-active img { animation: floaty 6.5s ease-in-out infinite; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.hero__role {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.45;
  text-wrap: balance;
}

/* =========================================================
   Home feed — full-bleed project media (original look)
   ========================================================= */
.home-feed { display: block; }
.feed {
  display: block;
  position: relative;
  width: 100%;
  height: min(92vh, 880px);
  overflow: hidden;
  background: var(--paper-2);
  color: #fff;
}
.feed__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  filter: blur(0px);
  transition: filter 0.45s linear;
  will-change: filter;
}
.feed__index {
  position: absolute;
  top: clamp(1.1rem, 2.5vh, 1.75rem);
  left: clamp(1.25rem, 5vw, 5rem);
  z-index: 3;
  color: #fff;
  mix-blend-mode: difference;
  font-size: var(--fs-meta);
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}
/* Name + year + CTA revealed on hover */
.feed__card {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 3;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--gap);
  padding: clamp(2.5rem, 6vh, 4.5rem) clamp(1.25rem, 5vw, 5rem) clamp(1.5rem, 3.5vh, 2.5rem);
  color: #fff;
  background: linear-gradient(to top, rgba(20, 18, 15, 0.62), rgba(20, 18, 15, 0) 100%);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.feed:hover .feed__card,
.feed:focus-visible .feed__card { opacity: 1; transform: translateY(0); }
.feed__name {
  font-size: var(--fs-title);
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.feed__year { color: rgba(255, 255, 255, 0.7); margin-left: 0.5rem; font-size: 0.8em; }
.feed__cta {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}
.feed:hover .feed__cta .arrow { transform: translateX(6px); }
.feed__cta .arrow { transition: transform 0.4s var(--ease); }

/* =========================================================
   Featured work (home)
   ========================================================= */
.features { padding: var(--sec) 0 0; }
.features__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
  gap: var(--gap);
  flex-wrap: wrap;
}
.features__head h2 { font-size: var(--fs-h2); }

.feature {
  display: block;
  margin-bottom: var(--sec);
  color: var(--ink);
}
.feature__media {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--paper-2);
  aspect-ratio: 16 / 10;
}
.feature__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.2s var(--ease);
  will-change: transform;
}
.feature:hover .feature__media img { transform: scale(1.06); }
.feature__index {
  position: absolute;
  top: 1rem; left: 1rem;
  font-size: var(--fs-meta);
  letter-spacing: 0.06em;
  color: #fff;
  mix-blend-mode: difference;
  z-index: 2;
}
.feature__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--gap);
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.feature__title {
  font-size: var(--fs-title);
  letter-spacing: -0.025em;
  line-height: 1.02;
}
.feature__role { color: var(--muted); font-size: 0.95rem; margin-top: 0.4rem; }
.feature__right {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  color: var(--muted);
  font-size: 0.95rem;
}
.feature__cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--ink);
}
.feature__cta .arrow { transition: transform 0.4s var(--ease); }
.feature:hover .feature__cta .arrow { transform: translateX(6px); }

/* “See all works” band */
.allworks {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  border-top: 1px solid var(--hair);
  margin-top: var(--sec);
}
.allworks a {
  font-size: var(--fs-h1);
  letter-spacing: -0.03em;
  display: inline-flex; align-items: center; gap: clamp(1rem,3vw,2rem);
}
.allworks .arrow { transition: transform 0.5s var(--ease); }
.allworks a:hover .arrow { transform: translateX(12px); }

/* =========================================================
   Works page
   ========================================================= */
.page-head {
  padding-top: clamp(9rem, 20vh, 15rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}
.page-head h1 { font-size: var(--fs-hero); letter-spacing: -0.04em; line-height: 0.92; }
.page-head .sub {
  margin-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: baseline;
  gap: var(--gap); flex-wrap: wrap;
  border-top: 1px solid var(--hair);
  padding-top: 1.25rem;
}
.page-head .sub p { max-width: 42ch; color: var(--ink-soft); }
.page-head .count { color: var(--muted); font-size: var(--fs-meta); letter-spacing: 0.06em; text-transform: uppercase; }

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2.5rem, 5vw, 5.5rem) clamp(1.5rem, 4vw, 4rem);
  padding-bottom: var(--sec);
}
.card { display: block; color: var(--ink); }
.card__media {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--paper-2);
  aspect-ratio: 4 / 3;
}
.card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.01);
  transition: transform 1s var(--ease), filter 1s var(--ease);
  will-change: transform;
}
.card:hover .card__media img { transform: scale(1.05); }
.card__overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1rem 1.1rem;
  display: flex; justify-content: flex-end;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}
.card:hover .card__overlay { opacity: 1; transform: translateY(0); }
.card__view {
  background: color-mix(in srgb, var(--paper) 85%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--ink);
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  display: inline-flex; align-items: center; gap: 0.45rem;
}
.card:hover .card__view .arrow { transform: translateX(4px); }
.card__view .arrow { transition: transform 0.4s var(--ease); }

.card__body {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.25rem;
  margin-top: 1.15rem;
}
.card__title {
  font-size: var(--fs-title);
  letter-spacing: -0.025em;
  line-height: 1.05;
}
.card__role {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;      /* fixes the cramped 0-gap label */
  line-height: 1.35;
  max-width: 34ch;
}
.card__year {
  color: var(--muted);
  font-size: 0.9rem;
  flex: none;
  padding-top: 0.35rem;
}

/* =========================================================
   About page
   ========================================================= */
.about-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--gap);
  align-items: end;
  padding-top: clamp(9rem, 20vh, 14rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}
.about-hero h1 { font-size: var(--fs-hero); letter-spacing: -0.04em; line-height: 0.9; }
.about-hero__img {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
  background: var(--paper-2);
}
.about-hero__img img { width: 100%; height: 100%; object-fit: cover; }

.intro { padding: var(--sec) 0; }
.intro__grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gap);
  align-items: start;
}
.intro__statement { font-size: var(--fs-h2); line-height: 1.12; letter-spacing: -0.02em; text-wrap: balance; }
.intro__quote {
  font-family: var(--font-serif);
  font-size: var(--fs-lead);
  line-height: 1.4;
  color: var(--ink-soft);
  margin-top: 2rem;
  max-width: 54ch;
}

.section-label {
  font-size: var(--fs-meta);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hair);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

/* Experience accordion */
.experience { padding-bottom: var(--sec); }
.exp-grid { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: var(--gap); align-items: start; }
.exp-thumb { border-radius: 4px; overflow: hidden; background: var(--paper-2); aspect-ratio: 3/4; max-width: 320px; }
.exp-thumb img { width: 100%; height: 100%; object-fit: cover; }
.acc__item { border-top: 1px solid var(--hair); }
.acc__item:last-child { border-bottom: 1px solid var(--hair); }
.acc__head {
  width: 100%;
  background: none; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: clamp(1.25rem, 2.5vw, 1.9rem) 0;
  text-align: left;
  font-size: var(--fs-title);
  letter-spacing: -0.02em;
  color: var(--ink);
}
.acc__icon { flex: none; width: 22px; height: 22px; position: relative; }
.acc__icon::before, .acc__icon::after {
  content: ""; position: absolute; background: var(--ink-soft);
  left: 50%; top: 50%;
}
.acc__icon::before { width: 100%; height: 1.5px; transform: translate(-50%, -50%); }
.acc__icon::after  { width: 1.5px; height: 100%; transform: translate(-50%, -50%); transition: transform 0.4s var(--ease); }
.acc__item.open .acc__icon::after { transform: translate(-50%, -50%) scaleY(0); }
.acc__panel { overflow: hidden; height: 0; transition: height 0.5s var(--ease); }
.acc__panel-inner { padding-bottom: 1.75rem; color: var(--ink-soft); max-width: 60ch; }

/* Interests grid */
.interests { padding-bottom: var(--sec); }
.int-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.75rem);
}
.int {
  display: flex; flex-direction: column; gap: 0.85rem;
}
.int__media { aspect-ratio: 1/1; overflow: hidden; border-radius: 4px; background: var(--paper-2); }
.int__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.int:hover .int__media img { transform: scale(1.05); }
.int__label { color: var(--ink-soft); font-size: 0.95rem; }

/* =========================================================
   Case study page
   ========================================================= */
.case-hero { padding-top: clamp(9rem, 20vh, 14rem); padding-bottom: clamp(2rem,5vw,3.5rem); }
.case-hero h1 { font-size: var(--fs-hero); letter-spacing: -0.04em; line-height: 0.92; }
.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  border-top: 1px solid var(--hair);
  margin-top: clamp(2rem,5vw,3.5rem);
  padding-top: 1.5rem;
}
.case-meta dt { font-size: var(--fs-meta); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 0.5rem; }
.case-meta dd { font-size: 0.98rem; line-height: 1.4; }
.case-figure { margin: clamp(2.5rem,6vw,5rem) 0; border-radius: 4px; overflow: hidden; background: var(--paper-2); }
.case-figure img { width: 100%; }
.case-body { max-width: 62ch; margin: 0 auto; padding-bottom: var(--sec); }
.case-body .lead { margin-bottom: 1.5rem; }
.case-note {
  margin-top: 2.5rem; padding: 1.25rem 1.5rem;
  border: 1px solid var(--hair); border-radius: 6px;
  color: var(--muted); font-size: 0.95rem;
}
.case-next { border-top: 1px solid var(--hair); padding: clamp(2.5rem,6vw,4.5rem) 0; }
.case-next a { display: flex; justify-content: space-between; align-items: center; gap: var(--gap); }
.case-next .t { font-size: var(--fs-h1); letter-spacing: -0.03em; }
.case-next:hover .arrow { transform: translateX(10px); }
.case-next .arrow { transition: transform 0.5s var(--ease); }

/* =========================================================
   Footer (giant wordmark)
   ========================================================= */
.footer { padding-top: clamp(3rem, 8vw, 6rem); }
.footer__cols {
  display: flex;
  justify-content: flex-end;
  gap: clamp(3rem, 10vw, 8rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  flex-wrap: wrap;
}
.footer__col h4 { font-size: var(--fs-meta); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 0.9rem; font-weight: 500; }
.footer__col a, .footer__col p { color: var(--ink-soft); display: block; margin-bottom: 0.35rem; transition: color 0.3s var(--ease); }
.footer__col a:hover { color: var(--ink); }
.wordmark {
  width: 100%;
  font-size: clamp(5rem, 27vw, 25rem);
  line-height: 0.72;
  letter-spacing: -0.08em;
  font-weight: 500;
  text-align: center;
  /* Soft, out-of-focus grey like the Yubai 余白 card: pale neutral letters, lighter at the top, heavy blur that scales with the type */
  color: transparent;
  background: linear-gradient(180deg, #E9E8E5 0%, #DCDBD7 55%, #D6D5D1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  filter: blur(clamp(3px, 0.5vw, 7px));
  opacity: .9;
  user-select: none;
  padding-bottom: clamp(1rem, 3vw, 2.5rem);
  white-space: nowrap;
  overflow: hidden;
}
.footer__base {
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--gap); flex-wrap: wrap;
  border-top: 1px solid var(--hair);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: var(--fs-meta);
}
.footer__base a { color: var(--muted); }
.footer__base a:hover { color: var(--ink); }

/* =========================================================
   Reveal on scroll
   ========================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

/* =========================================================
   Utilities & arrow
   ========================================================= */
.arrow { display: inline-block; }
.hidden-mobile { display: initial; }

/* Subtle frame so light images always read as bounded surfaces */
.feature__media, .card__media, .about-hero__img, .exp-thumb, .int__media, .case-figure {
  box-shadow: inset 0 0 0 1px rgba(33, 30, 26, 0.06);
}

/* Play-on-hover video preview */
.media__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  z-index: 1;
  pointer-events: none;
}
.feature__media.is-playing .media__video,
.card__media.is-playing .media__video { opacity: 1; }
.card__overlay { z-index: 2; }
.feature__index { z-index: 3; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .about-hero { grid-template-columns: 1fr; gap: 2rem; }
  .about-hero__img { aspect-ratio: 3/2; max-height: 60vh; }
  .intro__grid { grid-template-columns: 1fr; gap: 1rem; }
  .exp-grid { grid-template-columns: 1fr; }
  .exp-thumb { max-width: 220px; }
  .case-meta { grid-template-columns: repeat(2, 1fr); row-gap: 1.5rem; }
}
@media (max-width: 720px) {
  .work-grid { grid-template-columns: 1fr; gap: clamp(2rem,8vw,3rem); }
  .int-grid { grid-template-columns: repeat(2, 1fr); }
  .card__body { flex-direction: column; gap: 0.35rem; }
  .card__year { padding-top: 0; }
  .feature__row { flex-direction: column; gap: 0.75rem; }
  .hero__aside { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}