/* ══════════════════════════════════════════════════════════════
   home.css — Home Page (index.html) Exclusive Styles
   Hero, about, categories, projects, and journal.
   ══════════════════════════════════════════════════════════════ */

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
  padding: clamp(120px, 13vw, 180px) var(--page-x) clamp(40px, 6vw, 82px);
  border-bottom: var(--line);
  overflow: hidden;
  color: var(--surface);
  background: var(--ink-deep);
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.55fr);
  gap: clamp(28px, 6vw, 96px);
  align-items: end;
  width: 100%;
}

.hero-title-block,
.hero-aside {
  display: grid;
  align-content: end;
}

.hero-title-block {
  gap: clamp(18px, 2.6vw, 32px);
}

.motion-ready .hero-title-block > *,
.motion-ready .hero-aside > * {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  clip-path: inset(0 0 22% 0);
  filter: blur(8px);
  animation: reveal-up var(--motion-slow) var(--ease-golden) forwards;
}

.motion-ready .hero-title-block > :nth-child(2) {
  animation-delay: 120ms;
}

.motion-ready .hero-aside > :first-child {
  animation-delay: 260ms;
}

.motion-ready .hero-aside > :nth-child(2) {
  animation-delay: 380ms;
}

.hero .section-kicker {
  color: color-mix(in oklch, var(--surface), transparent 10%);
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 200;
  line-height: 1.08;
  text-wrap: balance;
}

.hero-lede {
  max-width: 480px;
  margin: 0 0 clamp(20px, 2vw, 30px);
  color: color-mix(in oklch, var(--surface), transparent 14%);
  font-size: var(--text-body);
  line-height: 1.75;
  text-wrap: pretty;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(30px, 4vw, 54px);
}

.meta-cell {
  max-width: 250px;
  min-height: 0;
  padding: 0;
  background: transparent;
}

.meta-cell b {
  display: block;
  margin-bottom: 10px;
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.meta-cell span {
  color: color-mix(in oklch, var(--surface), transparent 22%);
  line-height: 1.5;
}

/* ── Hero media ───────────────────────────────────────────── */
.hero-media {
  position: absolute;
  inset: 0;
  margin: 0;
  min-height: 100%;
  background: var(--ink-deep);
  clip-path: inset(0 0 0 0);
  overflow: hidden;
}

.hero-media::before {
  position: absolute;
  inset: 0;
  z-index: 3;
  border: 0;
  background:
    radial-gradient(circle at 72% 36%, transparent 0 24%, color-mix(in oklch, black, transparent 92%) 54%, color-mix(in oklch, black, transparent 72%) 100%),
    linear-gradient(180deg, color-mix(in oklch, black, transparent 52%) 0%, transparent 38%, color-mix(in oklch, black, transparent 44%) 100%),
    linear-gradient(90deg, color-mix(in oklch, black, transparent 52%) 0%, color-mix(in oklch, black, transparent 68%) 46%, transparent 74%);
  content: "";
  pointer-events: none;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  z-index: 4;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--accent), transparent 70%) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, color-mix(in oklch, var(--surface), transparent 88%) 0 1px, transparent 1px 100%);
  background-size: 18vw 100%, 100% 22vh;
  content: "";
  opacity: 0.16;
  pointer-events: none;
  mix-blend-mode: screen;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-height: inherit;
  border: 0;
  object-fit: cover;
  opacity: 1;
  filter: saturate(0.88) contrast(0.96) brightness(0.88);
  pointer-events: none;
  transform: translate(-50%, -50%) scale(1.045);
}

.motion-ready .hero-media {
  animation: hero-mask var(--motion-slow) var(--ease-golden) forwards;
}

.hero-caption {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 5;
  padding: 0;
  background: transparent;
  color: color-mix(in oklch, var(--surface), transparent 15%);
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ── About grid ───────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(36px, 7vw, 112px);
  align-items: start;
}

.about-copy {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
}

.about-copy p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: var(--text-body);
  line-height: 1.85;
  text-wrap: pretty;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: var(--line);
  background: transparent;
}

.principle {
  min-height: 176px;
  padding: clamp(18px, 2vw, 30px) clamp(18px, 2vw, 30px) clamp(18px, 2vw, 30px) 0;
  background: transparent;
}

.principle + .principle {
  border-left: var(--line);
  padding-left: clamp(18px, 2vw, 30px);
}

.principle h3 {
  margin: 0 0 12px;
  font-size: var(--text-sm);
  font-weight: 300;
  line-height: 1.18;
}

.principle p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

/* ── Category showcase ────────────────────────────────────── */
.category-showcase {
  position: relative;
  border-bottom: var(--line);
  background: var(--fg);
}

.category-stack {
  position: relative;
  display: block;
}

.category-panel {
  position: relative;
  display: grid;
  min-height: clamp(560px, 86svh, 940px);
  overflow: hidden;
  color: var(--surface);
  isolation: isolate;
  transform: translateZ(0) scale(var(--stack-scale, 1));
  transition:
    transform 420ms var(--ease-cinematic),
    filter 420ms var(--ease-soft);
}

.category-panel::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, color-mix(in oklch, black, transparent 58%) 0%, transparent 35%, color-mix(in oklch, black, transparent 18%) 100%),
    linear-gradient(90deg, color-mix(in oklch, black, transparent 24%) 0%, transparent 66%);
  content: "";
  pointer-events: none;
  transition: opacity 420ms var(--ease-soft);
}

.category-panel + .category-panel {
  border-top: 1px solid color-mix(in oklch, var(--surface), transparent 82%);
}

@supports (position: sticky) {
  .category-showcase {
    padding-bottom: clamp(40px, 8svh, 92px);
  }

  .category-stack {
    min-height: 190svh;
  }

  .category-panel {
    position: sticky;
    top: 0;
    min-height: 100svh;
    z-index: var(--stack-index, 1);
  }

  .category-panel + .category-panel {
    margin-top: -8svh;
  }

  .category-panel:nth-child(1) { --stack-index: 1; }
  .category-panel:nth-child(2) { --stack-index: 2; }

  .category-panel.is-under-stack {
    --stack-scale: 0.965;
    filter: brightness(0.72) saturate(0.82);
  }

  .category-panel.is-under-stack::after {
    opacity: 1;
  }
}

.category-panel img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(0.96);
  transform: scale(1.02);
  transition:
    transform 1200ms var(--ease-cinematic),
    filter 1200ms var(--ease-soft);
}

.category-panel:hover img,
.category-panel:focus-within img {
  transform: scale(1.065);
  filter: saturate(0.92) contrast(1.02);
}

.category-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 420px);
  gap: clamp(28px, 6vw, 96px);
  align-items: end;
  align-self: end;
  width: 100%;
  padding: clamp(42px, 7vw, 108px) var(--page-x);
}

.category-index {
  display: block;
  margin-bottom: clamp(18px, 2vw, 26px);
  color: color-mix(in oklch, var(--surface), transparent 18%);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.category-content h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 200;
  line-height: 0.98;
  text-wrap: balance;
}

.category-summary {
  display: grid;
  gap: 22px;
  align-content: end;
  max-width: 430px;
}

.category-summary p {
  margin: 0;
  color: color-mix(in oklch, var(--surface), transparent 13%);
  font-size: var(--text-body);
  line-height: 1.7;
  text-wrap: pretty;
}

.category-link {
  justify-self: start;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid currentColor;
  color: var(--surface);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition:
    transform var(--motion-fast) var(--ease-cinematic),
    color var(--motion-fast) var(--ease-soft);
}

.category-link::after {
  content: "->";
  transition: transform var(--motion-base) var(--ease-cinematic);
}

.category-link:hover,
.category-link:focus-visible {
  transform: translateY(-2px);
  color: color-mix(in oklch, var(--surface), var(--accent) 18%);
}

.category-link:hover::after,
.category-link:focus-visible::after {
  transform: translateX(6px);
}

/* Motion: category panels */
.motion-ready .category-panel.reveal-item {
  transform: translateZ(0) scale(var(--stack-scale, 1));
  clip-path: inset(0 0 18% 0);
}

.motion-ready .category-panel.reveal-item.is-visible {
  clip-path: inset(0);
}

.motion-ready .category-panel.reveal-item .category-content {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity var(--motion-slow) var(--ease-cinematic),
    transform var(--motion-slow) var(--ease-cinematic);
  transition-delay: 160ms;
}

.motion-ready .category-panel.reveal-item.is-visible .category-content {
  opacity: 1;
  transform: translateY(0);
}

/* ── Projects head ────────────────────────────────────────── */
.projects-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  margin-bottom: clamp(28px, 5vw, 60px);
}

/* ── Journal ──────────────────────────────────────────────── */
.journal {
  background: color-mix(in oklch, var(--surface), var(--bg) 70%);
}

.journal-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(34px, 6vw, 96px);
  align-items: start;
}

.journal-list {
  display: grid;
  border-top: var(--line);
}

.journal-item {
  display: grid;
  grid-template-columns: 112px 1fr auto;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  padding: clamp(20px, 3vw, 34px) 0;
  border-bottom: var(--line);
  transition:
    color var(--motion-fast) var(--ease-soft),
    background var(--motion-fast) var(--ease-soft),
    padding-inline var(--motion-base) var(--ease-cinematic);
}

.journal-item:hover,
.journal-item:focus-visible {
  background: color-mix(in oklch, var(--surface), transparent 44%);
  padding-inline: 18px;
}

.journal-item time {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.journal-item h3 {
  margin: 0 0 8px;
  font-size: var(--text-sm);
  font-weight: 300;
  line-height: 1.2;
}

.journal-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.journal-arrow {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: var(--line);
  color: var(--accent);
  transition:
    transform var(--motion-base) var(--ease-cinematic),
    background var(--motion-fast) var(--ease-soft),
    color var(--motion-fast) var(--ease-soft);
}

.journal-item:hover .journal-arrow,
.journal-item:focus-visible .journal-arrow {
  transform: translateX(6px);
  background: var(--accent);
  color: var(--surface);
}

/* ══════════════════════════════════════════════════════════════
   Responsive — Home
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 1180px) {
  .hero,
  .about-grid,
  .category-content,
  .journal-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
  }

  .hero-copy {
    grid-template-columns: 1fr;
  }

  .hero-media {
    min-height: clamp(420px, 62svh, 660px);
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: 100svh;
    padding-top: 136px;
  }

  .hero-media::before {
    background:
      linear-gradient(180deg, color-mix(in oklch, black, transparent 14%) 0%, transparent 34%, color-mix(in oklch, black, transparent 8%) 100%),
      linear-gradient(90deg, color-mix(in oklch, black, transparent 4%) 0%, color-mix(in oklch, black, transparent 38%) 68%, transparent 100%);
  }

  .hero-media::after {
    background-size: 34vw 100%, 100% 18vh;
    opacity: 0.12;
  }

  .hero-media.has-video .hero-video {
    opacity: 0.84;
  }

  .category-showcase {
    padding-bottom: 0;
  }

  .category-stack {
    min-height: auto;
  }

  .category-panel {
    position: relative;
    min-height: clamp(520px, 78svh, 760px);
  }

  .category-panel + .category-panel {
    margin-top: 0;
  }

  .category-content {
    gap: 24px;
  }

  .category-content h2 {
    font-size: var(--text-xl);
  }

  .hero-meta,
  .principles {
    grid-template-columns: 1fr;
  }

  .principle + .principle {
    border-left: 0;
    border-top: var(--line);
  }

  .projects-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .journal-item {
    grid-template-columns: 1fr;
  }

  .journal-arrow {
    display: none;
  }
}

@media (max-width: 430px) {
  .hero-media {
    min-height: 360px;
  }

  .hero-media.has-video .hero-video {
    opacity: 0.74;
  }

  .hero-caption {
    right: 10px;
    bottom: 10px;
    max-width: calc(100% - 20px);
  }

  .hero-video {
    /* Slightly tighter on very small screens */
    opacity: 0.82;
  }
}

/* Category stack: reduced-motion fallback */
@media (prefers-reduced-motion: reduce) {
  .category-stack {
    min-height: auto;
  }

  .category-panel {
    position: relative;
    top: auto;
    transform: none !important;
  }

  .category-panel + .category-panel {
    margin-top: 0;
  }
}