/* ════════════════════════════════════════════════
   PAGECRAFTORY — IMMERSIVE 3D WEBSITES
   Full-journey scroll experience · black + gold
   ════════════════════════════════════════════════ */

:root {
  --ink: #060504;
  --gold: #caa45d;
  --gold-bright: #e9d5a3;
  --gold-dim: rgba(202, 164, 93, 0.35);
  --paper: #f5f0e5;
  --paper-dim: rgba(245, 240, 229, 0.82);
  --paper-faint: rgba(245, 240, 229, 0.55);
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Manrope", system-ui, sans-serif;
  --ease-luxe: cubic-bezier(0.65, 0, 0.05, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body[data-loading] { overflow: hidden; }
::selection { background: var(--gold); color: var(--ink); }
em { font-style: italic; color: var(--gold-bright); }

/* The page scrolls only through this spacer */
.spacer { height: 1100vh; }

/* ─────────────── PRELOADER ─────────────── */
.loader {
  position: fixed; inset: 0; z-index: 100;
  background: var(--ink);
  display: grid; place-items: center;
  transition: opacity 0.9s var(--ease-luxe), visibility 0.9s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__inner {
  display: flex; flex-direction: column; align-items: center; gap: 1.6rem;
  width: min(320px, 70vw);
}
.loader__brand {
  font-family: var(--serif); font-size: 2rem; font-weight: 300;
  letter-spacing: 0.45em; padding-left: 0.45em;
  color: var(--gold-bright);
}
.loader__line {
  width: 100%; height: 1px; background: rgba(245, 240, 229, 0.12);
  overflow: hidden;
}
.loader__line-fill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  transition: width 0.25s ease;
}
.loader__count {
  font-size: 0.7rem; letter-spacing: 0.35em;
  color: var(--paper-faint); font-variant-numeric: tabular-nums;
}

/* ─────────────── WORLD + ATMOSPHERE ─────────────── */
#stage {
  position: fixed; inset: 0; z-index: 0;
  width: 100%; height: 100vh; height: 100dvh;
  display: block;
  background:
    radial-gradient(ellipse 55% 42% at 50% 45%, rgba(202, 164, 93, 0.10), transparent 70%),
    radial-gradient(ellipse 80% 60% at 70% 90%, rgba(58, 44, 22, 0.35), transparent 70%);
}
body.has-3d #stage { background: none; }
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(ellipse 120% 90% at 50% 45%, transparent 42%, rgba(0,0,0,0.75) 100%),
    linear-gradient(rgba(0, 0, 0, 0.14), rgba(0, 0, 0, 0.14));
}
.grain {
  position: fixed; inset: -50%; z-index: 2; pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 0.9s steps(4) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 3%); }
  50% { transform: translate(3%, -2%); }
  75% { transform: translate(-3%, -3%); }
  100% { transform: translate(2%, 2%); }
}

/* ─────────────── CURSOR ─────────────── */
.cursor { position: fixed; inset: 0; z-index: 90; pointer-events: none; }
.cursor__dot, .cursor__ring { position: absolute; top: 0; left: 0; }
.cursor__dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--gold-bright);
  transform: translate(-50%, -50%);
}
.cursor__ring {
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--gold-dim);
  transform: translate(-50%, -50%);
  transition: width 0.35s var(--ease-out), height 0.35s var(--ease-out),
              border-color 0.35s, background 0.35s;
}
.cursor.is-hover .cursor__ring {
  width: 56px; height: 56px;
  border-color: var(--gold);
  background: rgba(202, 164, 93, 0.06);
}
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

/* ─────────────── HUD ─────────────── */
.hud {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem clamp(1.2rem, 4vw, 3rem);
  pointer-events: none;
}
.hud__brand {
  display: flex; align-items: baseline; gap: 0.8rem;
  text-decoration: none; color: var(--paper);
  pointer-events: auto;
}
.hud__mark {
  font-family: var(--serif); font-size: 1.25rem;
  letter-spacing: 0.3em; color: var(--gold-bright);
}
.hud__name {
  font-size: 0.64rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--paper-dim);
}
.hud__cta {
  pointer-events: auto;
  font-family: var(--sans); font-size: 0.64rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--gold-bright); background: rgba(6, 5, 4, 0.35);
  border: 1px solid var(--gold-dim);
  padding: 0.75rem 1.5rem; border-radius: 2rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.4s, color 0.4s, border-color 0.4s;
}
.hud__cta:hover { background: var(--gold); color: var(--ink); border-color: var(--gold); }
@media (max-width: 720px) { .hud__name { display: none; } }

/* ─────────────── CHAPTER RAIL ─────────────── */
.rail {
  position: fixed; right: clamp(1rem, 3vw, 2.4rem); top: 50%; z-index: 50;
  transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 1.4rem;
}
.rail__stop {
  display: flex; align-items: center; gap: 0.8rem; flex-direction: row-reverse;
  background: none; border: none; cursor: pointer;
  color: var(--paper-faint);
  font-family: var(--sans); font-size: 0.58rem;
  letter-spacing: 0.26em; text-transform: uppercase;
}
.rail__stop i {
  width: 7px; height: 7px; border-radius: 50%;
  border: 1px solid var(--gold-dim);
  background: transparent;
  transition: background 0.4s, border-color 0.4s, box-shadow 0.4s;
}
.rail__stop span {
  opacity: 0; transform: translateX(6px);
  transition: opacity 0.35s, transform 0.35s var(--ease-out);
  white-space: nowrap;
}
.rail__stop:hover span { opacity: 1; transform: none; }
.rail__stop.is-active i {
  background: var(--gold-bright); border-color: var(--gold-bright);
  box-shadow: 0 0 12px rgba(233, 213, 163, 0.7);
}
.rail__stop.is-active { color: var(--gold-bright); }
.rail__stop.is-active span { opacity: 1; transform: none; }
@media (max-width: 720px) {
  .rail { right: 0.8rem; gap: 1.1rem; }
  .rail__stop span { display: none; }
}

/* ─────────────── DEPTH METER ─────────────── */
.depth {
  position: fixed; left: clamp(1.2rem, 4vw, 3rem); bottom: 2rem; z-index: 50;
  display: flex; align-items: baseline; gap: 0.3rem;
  font-variant-numeric: tabular-nums;
  color: var(--paper-faint);
}
.depth__value {
  font-family: var(--serif); font-size: 2rem; font-weight: 300;
  color: var(--gold-bright); min-width: 3.2ch; text-align: right;
}
.depth__unit { font-size: 0.66rem; letter-spacing: 0.3em; text-transform: uppercase; }

/* ─────────────── SCROLL HINT ─────────────── */
.hint {
  position: fixed; bottom: 2.2rem; left: 50%; z-index: 50;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.9rem;
  font-size: 0.58rem; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--paper-faint);
  transition: opacity 0.6s;
}
.hint.is-hidden { opacity: 0; }
.hint__line {
  width: 1px; height: 52px; overflow: hidden; position: relative;
  background: rgba(245, 240, 229, 0.1);
}
.hint__line::after {
  content: ""; position: absolute; top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--gold);
  animation: scroll-drip 2.2s var(--ease-luxe) infinite;
}
@keyframes scroll-drip {
  0% { top: -100%; } 55% { top: 0; } 100% { top: 100%; }
}

/* ─────────────── CHAPTERS ─────────────── */
.chapters { position: fixed; inset: 0; z-index: 10; pointer-events: none; }
.chapter {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(1.4rem, 6vw, 7rem);
  opacity: 0;
  visibility: hidden;
}
.chapter--center { align-items: center; text-align: center; }
.chapter--left { align-items: flex-start; text-align: left; }
.chapter--right { align-items: flex-end; text-align: right; }

.chapter__eyebrow {
  font-size: 0.66rem; letter-spacing: 0.5em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 2rem;
}
.chapter__index {
  font-size: 0.62rem; letter-spacing: 0.42em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1.6rem;
}
.chapter__title {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(2.7rem, 7.5vw, 6.4rem);
  line-height: 1.04; letter-spacing: 0.005em;
  text-shadow: 0 2px 50px rgba(0, 0, 0, 0.7), 0 0 14px rgba(6, 5, 4, 0.45);
}
.chapter__text {
  margin-top: 1.8rem; max-width: 34rem;
  color: var(--paper-dim);
  font-size: clamp(0.95rem, 1.4vw, 1.08rem);
  text-shadow: 0 1px 22px rgba(0, 0, 0, 0.85);
}
.chapter--right .chapter__text { margin-left: auto; }

/* chapter motion — driven by JS via --p (0..1 visibility) */
.chapter > * {
  transform: translateY(calc((1 - var(--p, 0)) * 34px));
  transition: transform 0.1s linear;
}

/* ─────────────── CONTACT CHAPTER ─────────────── */
.chapter--contact { pointer-events: none; }
.chapter--contact.is-live { pointer-events: auto; }
.contact-form {
  margin-top: 2.4rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.8rem 1.8rem;
  width: min(46rem, 92vw);
  background: rgba(8, 7, 5, 0.55);
  border: 1px solid rgba(202, 164, 93, 0.18);
  border-radius: 12px;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-align: left;
}
@media (max-width: 640px) { .contact-form { grid-template-columns: 1fr; } }
.field { position: relative; }
.field--full { grid-column: 1 / -1; }
.field input, .field textarea {
  width: 100%;
  background: transparent; border: none;
  border-bottom: 1px solid rgba(245, 240, 229, 0.18);
  padding: 1rem 0 0.7rem;
  color: var(--paper);
  font-family: var(--serif); font-size: 1.3rem; font-weight: 300;
  outline: none; resize: none;
  transition: border-color 0.4s;
}
.field input:focus, .field textarea:focus { border-bottom-color: var(--gold); }
.field label {
  position: absolute; left: 0; top: 1rem;
  font-size: 0.74rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--paper-faint);
  pointer-events: none;
  transition: top 0.4s var(--ease-out), font-size 0.4s, color 0.4s;
}
.field input:focus + label, .field textarea:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:not(:placeholder-shown) + label {
  top: -0.6rem; font-size: 0.56rem; color: var(--gold);
}
.btn-gold {
  grid-column: 1 / -1; justify-self: start;
  position: relative; overflow: hidden;
  font-family: var(--sans); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.3em; text-transform: uppercase;
  padding: 1rem 2.3rem; border-radius: 3rem; border: none; cursor: pointer;
  color: var(--ink);
  background: linear-gradient(120deg, var(--gold) 0%, var(--gold-bright) 55%, var(--gold) 100%);
  background-size: 200% 100%;
  transition: background-position 0.7s var(--ease-out), box-shadow 0.45s;
}
.btn-gold:hover {
  background-position: 100% 0;
  box-shadow: 0 0 42px rgba(202, 164, 93, 0.35);
}
.contact-note {
  grid-column: 1 / -1;
  font-size: 0.72rem; color: var(--paper-faint); letter-spacing: 0.04em;
}

/* ─────────────── REDUCED MOTION ─────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .grain, .cursor, .hint { display: none; }
  /* Linearize the experience: chapters become a normal page */
  .spacer { display: none; }
  .chapters { position: static; pointer-events: auto; }
  .chapter {
    position: relative; inset: auto;
    opacity: 1 !important; visibility: visible !important;
    min-height: 60vh;
  }
  .chapter > * { transform: none !important; }
  .chapter--contact { pointer-events: auto; }
  .rail, .depth { display: none; }
  body { overflow-y: auto; }
}