/* =========================================================
   Petcavern — a calm, editorial, premium brand site
   ========================================================= */

:root {
  --paper:      #f5f1ea;
  --paper-2:    #efe9df;
  --ink:        #17150f;
  --ink-soft:   #3f3a30;   /* solid, AA-safe on paper */
  --muted:      #6b6459;
  --line:       #d9d1c4;
  --accent:     #b0603c;   /* warm clay — used sparingly */
  --accent-ink: #935030;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);

  --edge: clamp(1.5rem, 6vw, 7rem);
  --maxw: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:    #14130f;
    --paper-2:  #1b1a14;
    --ink:      #efe9dd;
    --ink-soft: #c9c1b1;   /* solid, AA-safe on dark paper */
    --muted:    #9a9284;
    --line:     #322f27;
    --accent:   #d0855f;
    --accent-ink: #e0a07e;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Optical sizing so Newsreader tracks its display cut at large sizes */
.wordmark, .foot-mark, .hero h1, .belief h2, .project h2, .close-statement {
  font-optical-sizing: auto;
}

/* Fine film grain for a tactile, premium surface */
.grain {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}
@media (prefers-color-scheme: dark) { .grain { mix-blend-mode: screen; opacity: 0.05; } }

a { color: inherit; text-decoration: none; }
em { font-style: italic; color: var(--accent); }

/* Accessible focus + skip link */
a:focus-visible,
.project:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}
.project:focus-visible { outline-offset: 8px; border-radius: 8px; }
:focus:not(:focus-visible) { outline: none; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed;
  top: 0; left: 50%;
  transform: translate(-50%, -120%);
  z-index: 10000;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1.1rem;
  border-radius: 0 0 8px 8px;
  font-size: 0.85rem;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus-visible { transform: translate(-50%, 0); outline: none; }

/* ---------- Header ---------- */
.site-head {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(1.4rem, 3vw, 2.4rem) var(--edge);
  z-index: 10;
}
.wordmark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.34rem;
  letter-spacing: -0.005em;
}
.head-nav { display: flex; gap: 1.9rem; }
.head-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}
.head-nav a:hover { color: var(--ink); }

/* ---------- Layout rhythm ---------- */
main > section {
  padding-left: var(--edge);
  padding-right: var(--edge);
  max-width: var(--maxw);
  margin: 0 auto;
}

/* Shared uppercase kicker language (eyebrow + section labels) */
.eyebrow,
.section-label {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.eyebrow::before,
.section-label::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
  flex: none;
}
.eyebrow { margin-bottom: 1.9rem; }
.section-label { margin-bottom: clamp(2.2rem, 3.5vw, 3.4rem); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-top: 7rem;
  padding-bottom: 4rem;
}
.hero-text { max-width: 40ch; }

/* Cavern Mouth visual */
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  min-height: min(74svh, 88vw);
  max-height: 74svh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-poster,
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-poster { transition: opacity 0.8s var(--ease); }
.hero-canvas {
  opacity: 0;
  transition: opacity 0.8s var(--ease);
}
.hero-shadow {
  position: absolute;
  left: 50%;
  bottom: 12%;
  width: 44%;
  height: 6%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(176, 96, 60, 0.3), transparent 72%);
  background: radial-gradient(ellipse at center, color-mix(in srgb, var(--accent) 30%, transparent), transparent 72%);
  filter: blur(10px);
  opacity: 0.38;
  pointer-events: none;
}
/* Once WebGL is live, the canvas takes over and the poster steps aside. */
.hero-visual.is-ready .hero-canvas { opacity: 1; }
.hero-visual.is-ready .hero-poster { opacity: 0; }

.eyebrow { color: var(--muted); }
.hero h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.7rem, 7.2vw, 5.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-bottom: 2.2rem;
}
.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.6;
  color: var(--ink-soft);
  text-wrap: pretty;
  max-width: 42ch;
}

/* ---------- Beliefs ---------- */
.beliefs { padding-top: clamp(6rem, 13vh, 11rem); padding-bottom: clamp(6rem, 13vh, 11rem); }
.belief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
}
.belief h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.22;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin-bottom: 0.9rem;
}
.belief p { color: var(--muted); font-size: 1rem; line-height: 1.62; text-wrap: pretty; }

/* ---------- Work ---------- */
.work { padding-top: clamp(4.5rem, 9vh, 7rem); padding-bottom: clamp(4.5rem, 9vh, 7rem); }

.project {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: clamp(2.4rem, 5vw, 3.6rem) 0;
  border-top: 1px solid var(--line);
}
.work .project:last-of-type { border-bottom: 1px solid var(--line); }
.project-index {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--accent);
  padding-top: 0.7rem;
}
.project h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 4.4vw, 3.3rem);
  letter-spacing: -0.015em;
  line-height: 1;
  text-wrap: balance;
  margin-bottom: 0.7rem;
  transition: color 0.3s var(--ease);
}
.project-line {
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: var(--ink);
  margin-bottom: 1rem;
  text-wrap: pretty;
}
.project-desc {
  color: var(--muted);
  max-width: 54ch;
  margin-bottom: 1.6rem;
  font-size: 1rem;
  text-wrap: pretty;
}
.project-cta {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.project .arrow { transition: transform 0.32s var(--ease); display: inline-block; }
.project:hover h2 { color: var(--accent-ink); }
.project:hover .arrow { transform: translateX(6px); }

/* ---------- Close / contact ---------- */
.close {
  padding-top: clamp(6rem, 15vh, 12rem);
  padding-bottom: clamp(6rem, 15vh, 12rem);
  text-align: center;
}
.close-statement {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.7rem, 4vw, 2.9rem);
  line-height: 1.24;
  letter-spacing: -0.015em;
  text-wrap: balance;
  max-width: 24ch;
  margin: 0 auto 2.4rem;
}
.mail {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--accent-ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: border-color 0.25s var(--ease);
}
.mail:hover { border-color: var(--accent); }

/* ---------- Footer ---------- */
.site-foot {
  border-top: 1px solid var(--line);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.4rem var(--edge);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  align-items: baseline;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
}
.foot-mark { font-family: var(--serif); color: var(--ink); font-size: 1rem; }
.foot-legal { flex: 1; }

/* ---------- Reveal motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .belief-grid { grid-template-columns: 1fr; gap: 2.6rem; }
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 8.5rem;
    gap: 2.5rem;
    text-align: left;
  }
  .hero-text { order: 1; max-width: 100%; }
  .hero-visual {
    order: 2;
    width: min(320px, 72vw);
    margin: 0 auto;
    min-height: 0;
    max-height: none;
  }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .head-nav { gap: 1.3rem; }
  .hero h1 br { display: none; }
  .project { grid-template-columns: 1fr; gap: 0.4rem; }
  .project-index { padding-top: 0; }
  .site-foot { flex-direction: column; }
  .foot-legal { order: 3; }
}