/* ─────────────────────────────────────────────────────────────────────────
   SAMANA — The Ember Field
   Palette: ink #0b0a08 · porcelain #f3ede2 · ember #e8a04b · moss #8d9b7a
   Type: Fraunces (display serif) · Manrope (sans)
   ───────────────────────────────────────────────────────────────────────── */

:root {
  --ink: #0b0a08;
  --ink-soft: #171410;
  --porcelain: #f3ede2;
  --porcelain-dim: rgba(243, 237, 226, 0.55);
  --porcelain-faint: rgba(243, 237, 226, 0.28);
  --ember: #e8a04b;
  --ember-bright: #ffc07a;
  --line: rgba(243, 237, 226, 0.14);
  --serif: "Fraunces", "Georgia", serif;
  --sans: "Manrope", "Inter", system-ui, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scrollbar-width: thin;
  scrollbar-color: rgba(232, 160, 75, 0.4) transparent;
}

body {
  background: var(--ink);
  color: var(--porcelain);
  font-family: var(--sans);
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.no-cursor,
body.no-cursor a,
body.no-cursor button { cursor: none; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: rgba(232, 160, 75, 0.35); }

/* ── Fallbacks ─────────────────────────────────────────────────────────── */

.seo-fallback {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
  pointer-events: none;
}

.noscript-panel {
  position: fixed; inset: 0; z-index: 200;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1em; padding: 8vw; text-align: center;
  background: var(--ink); color: var(--porcelain);
}
.noscript-panel .noscript-title { font-family: var(--serif); font-size: 1.6rem; letter-spacing: 0.14em; }
.noscript-panel a { color: var(--ember); }

/* ── Canvas & scroll proxy ─────────────────────────────────────────────── */

.webgl {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  display: block;
  outline: none;
  z-index: 0;
}

.scroll-proxy { position: relative; z-index: -1; width: 1px; }

/* ── Loader ────────────────────────────────────────────────────────────── */

.loader {
  position: fixed; inset: 0; z-index: 100;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1.2rem;
  background: var(--ink);
  transition: opacity 0.9s var(--ease-out), visibility 0.9s;
}
.loader.done { opacity: 0; visibility: hidden; pointer-events: none; }

.loader-mark {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.42em;
  padding-left: 0.42em; /* optically recenter the tracked-out text */
  color: var(--porcelain);
}

.loader-count {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(3.4rem, 9vw, 6.5rem);
  line-height: 1;
  color: var(--ember);
  font-variant-numeric: tabular-nums;
}

.loader-hint {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--porcelain-faint);
}

/* ── Nav ───────────────────────────────────────────────────────────────── */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: clamp(1.1rem, 2.6vw, 1.8rem) clamp(1.2rem, 4vw, 3rem);
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 1.1s var(--ease-out) 0.2s, transform 1.1s var(--ease-out) 0.2s;
  pointer-events: none;
}
.nav.on { opacity: 1; transform: none; pointer-events: auto; }

.nav-logo {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.02rem;
  letter-spacing: 0.34em;
}
.nav-logo-dot { color: var(--ember); margin-left: 0.15em; }

.nav-chapter {
  position: absolute; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 0.8rem;
  font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--porcelain-dim);
}
.nav-chapter-num { color: var(--ember); font-variant-numeric: tabular-nums; }
.nav-chapter-sep { width: 2.2rem; height: 1px; background: var(--line); }
.nav-chapter-name { transition: opacity 0.4s; min-width: 7em; }
.nav-chapter-name.swap { opacity: 0; }

.nav-cta {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 0.75em 1.6em;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--porcelain);
  backdrop-filter: blur(6px);
  transition: border-color 0.4s, background 0.4s, color 0.4s;
}
.nav-cta:hover {
  border-color: var(--ember);
  background: rgba(232, 160, 75, 0.12);
  color: var(--ember-bright);
}

/* ── Progress & scroll hint ────────────────────────────────────────────── */

.progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 41;
}
.progress-fill {
  height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--ember), var(--ember-bright));
  transform-origin: left;
  transform: scaleX(0);
}

.scroll-hint {
  position: fixed; bottom: clamp(1.4rem, 4vh, 2.6rem); left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  display: flex; flex-direction: column; align-items: center; gap: 0.7rem;
  font-size: 0.64rem; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--porcelain-faint);
  transition: opacity 0.7s;
  pointer-events: none;
}
.scroll-hint.off { opacity: 0; }

.scroll-hint-line {
  width: 1px; height: 3rem;
  background: linear-gradient(to bottom, var(--ember), transparent);
  animation: hint-drop 2.2s var(--ease-out) infinite;
  transform-origin: top;
}
@keyframes hint-drop {
  0% { transform: scaleY(0); opacity: 0; }
  35% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1) translateY(1.2rem); opacity: 0; }
}

/* ── Chapters ──────────────────────────────────────────────────────────── */

.chapters { position: fixed; inset: 0; z-index: 20; pointer-events: none; }

.chapter {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  padding: 0 clamp(1.4rem, 6vw, 5rem);
  opacity: 0;
  visibility: hidden;
}
.chapter a, .chapter button { pointer-events: auto; }

.chapter-left { align-items: flex-start; text-align: left; padding-left: clamp(1.6rem, 10vw, 12rem); }
.chapter-right { align-items: flex-end; text-align: right; padding-right: clamp(1.6rem, 10vw, 12rem); }

.eyebrow {
  font-size: 0.68rem; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--ember);
  margin-bottom: 1.6rem;
}

.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(4.2rem, 16vw, 12.5rem);
  line-height: 0.95;
  letter-spacing: 0.1em;
  color: var(--porcelain);
}
.hero-title span { display: block; }
.hero-title-thin {
  font-weight: 300;
  font-style: italic;
  color: var(--ember);
  font-size: 0.52em;
  letter-spacing: 0.14em;
}

.hero-tag {
  margin-top: 1.6rem;
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  letter-spacing: 0.06em;
  color: var(--porcelain-dim);
}

.hero-hint {
  margin-top: 2.4rem;
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--porcelain-faint);
}
.hero-hint::before, .hero-hint::after { content: "·"; color: var(--ember); margin: 0 0.9em; }

.chapter-line {
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.15;
}
.chapter-line.big { font-size: clamp(1.9rem, 5.4vw, 4.4rem); }
.chapter-line.accent { color: var(--ember); font-style: italic; }

.chapter-sub {
  margin-top: 1.6rem;
  max-width: 34em;
  font-size: clamp(0.92rem, 1.35vw, 1.05rem);
  line-height: 1.75;
  color: var(--porcelain-dim);
}
.chapter-left .chapter-sub, .chapter-right .chapter-sub { max-width: 26em; }

.pillar-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  color: rgba(232, 160, 75, 0.4);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.pillar-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 4.6vw, 3.6rem);
  line-height: 1.1;
}

/* ── Contact chapter & footer ──────────────────────────────────────────── */

.contact-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.4rem, 6.6vw, 5.6rem);
  line-height: 1.08;
}

.contact-actions-row {
  margin-top: 2.6rem;
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; align-items: center;
}

.btn-primary {
  font-size: 0.74rem; letter-spacing: 0.26em; text-transform: uppercase;
  padding: 1.05em 2.4em;
  border-radius: 99px;
  background: var(--ember);
  color: var(--ink);
  font-weight: 600;
  transition: background 0.4s, transform 0.4s var(--ease-out), box-shadow 0.4s;
}
.btn-primary:hover {
  background: var(--ember-bright);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(232, 160, 75, 0.35);
}

.btn-ghost {
  font-size: 0.78rem; letter-spacing: 0.16em;
  padding: 1em 1.8em;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--porcelain-dim);
  transition: border-color 0.4s, color 0.4s;
}
.btn-ghost:hover { border-color: var(--ember); color: var(--ember-bright); }

.footer {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: clamp(1.2rem, 3vw, 2rem) clamp(1.2rem, 4vw, 3rem);
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--porcelain-faint);
  border-top: 1px solid var(--line);
}
.footer a { transition: color 0.3s; }
.footer a:hover { color: var(--ember-bright); }
.footer-social { display: flex; gap: 1.6rem; }

/* ── Focus shard info card ─────────────────────────────────────────────── */

.shard-card {
  position: fixed;
  left: 50%;
  bottom: clamp(1.4rem, 5vh, 3rem);
  z-index: 50;
  width: min(420px, calc(100vw - 2.4rem));
  padding: 1.6rem 1.8rem 1.7rem;
  background: linear-gradient(160deg, rgba(26, 20, 13, 0.92), rgba(11, 10, 8, 0.92));
  border: 1px solid rgba(232, 160, 75, 0.35);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(232, 160, 75, 0.08);
  transform: translate(-50%, 14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out), visibility 0.45s;
}
.shard-card.on {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}
.shard-card[hidden] { display: block; } /* visibility handled by .on */

.shard-card-close {
  position: absolute; top: 0.8rem; right: 0.8rem;
  width: 2rem; height: 2rem;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--porcelain-dim);
  transition: border-color 0.3s, color 0.3s;
}
.shard-card-close:hover { border-color: var(--ember); color: var(--ember-bright); }

.shard-card-eyebrow {
  font-size: 0.6rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--ember);
  margin-bottom: 0.7rem;
}

.shard-card-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.45rem;
  line-height: 1.15;
  margin-bottom: 0.6rem;
}

.shard-card-text {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--porcelain-dim);
}

/* ── Contact overlay ───────────────────────────────────────────────────── */

.contact-overlay { position: fixed; inset: 0; z-index: 60; }
.contact-overlay[hidden] { display: none; }

.contact-backdrop {
  position: absolute; inset: 0;
  background: rgba(6, 5, 3, 0.7);
  backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.5s;
}
.contact-overlay.on .contact-backdrop { opacity: 1; }

.contact-panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(560px, 100%);
  overflow-y: auto;
  background: linear-gradient(160deg, #14110c, #0b0a08 60%);
  border-left: 1px solid var(--line);
  padding: clamp(2rem, 5vw, 3.4rem);
  transform: translateX(102%);
  transition: transform 0.7s var(--ease-out);
}
.contact-overlay.on .contact-panel { transform: none; }

.contact-close {
  position: absolute; top: 1.4rem; right: 1.4rem;
  width: 2.6rem; height: 2.6rem;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--porcelain-dim);
  transition: border-color 0.3s, color 0.3s, transform 0.5s var(--ease-out);
}
.contact-close:hover { border-color: var(--ember); color: var(--ember-bright); transform: rotate(90deg); }

.contact-eyebrow {
  font-size: 0.66rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--ember);
  margin: 1rem 0 1rem;
}

.contact-heading {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  line-height: 1.15;
  margin-bottom: 2.2rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-field { display: flex; flex-direction: column; gap: 0.5rem; border: 0; }

.contact-label {
  font-size: 0.66rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--porcelain-dim);
}

.contact-input {
  background: rgba(243, 237, 226, 0.04);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.9em 1em;
  color: var(--porcelain);
  font: inherit;
  transition: border-color 0.3s, background 0.3s;
}
.contact-input:focus {
  outline: none;
  border-color: var(--ember);
  background: rgba(232, 160, 75, 0.06);
}
.contact-input.invalid { border-color: #d96f4e; }
.contact-textarea { resize: vertical; min-height: 6em; }
.contact-input::placeholder { color: var(--porcelain-faint); }

.contact-err {
  display: none;
  font-size: 0.72rem;
  color: #e08a68;
  letter-spacing: 0.04em;
}
.contact-err.show { display: block; }

.contact-ranges { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.2rem; }

.contact-range {
  font-size: 0.76rem; letter-spacing: 0.06em;
  padding: 0.7em 1.3em;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--porcelain-dim);
  transition: border-color 0.3s, background 0.3s, color 0.3s;
}
.contact-range:hover { border-color: rgba(232, 160, 75, 0.5); }
.contact-range[aria-checked="true"] {
  border-color: var(--ember);
  background: rgba(232, 160, 75, 0.14);
  color: var(--ember-bright);
}

.contact-actions { display: flex; align-items: center; gap: 1.2rem; margin-top: 0.4rem; flex-wrap: wrap; }
.contact-status { font-size: 0.8rem; color: var(--porcelain-dim); }
.contact-status.ok { color: var(--ember-bright); }

/* ── Custom cursor ─────────────────────────────────────────────────────── */

.cursor {
  position: fixed; top: 0; left: 0; z-index: 90;
  width: 10px; height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--ember);
  pointer-events: none;
  mix-blend-mode: screen;
  transition: transform 0.25s var(--ease-out), opacity 0.3s;
  opacity: 0;
}
.cursor.on { opacity: 1; }
.cursor.grow { transform: scale(3.4); background: var(--ember-bright); opacity: 0.65; }

/* ── Responsive & motion ───────────────────────────────────────────────── */

@media (max-width: 720px) {
  .nav-chapter { display: none; }
  .chapter-left, .chapter-right {
    align-items: center; text-align: center;
    padding-left: clamp(1.4rem, 6vw, 5rem);
    padding-right: clamp(1.4rem, 6vw, 5rem);
  }
  .footer { flex-direction: column; gap: 0.8rem; text-align: center; padding-bottom: 1.2rem; }
  .contact-panel { border-left: 0; }
}

/* ── Fallback mode: 3D unavailable → plain scrolling page ─────────────── */

.fallback-note { display: none; }

body.fallback .loader,
body.fallback .webgl,
body.fallback .scroll-hint,
body.fallback .progress,
body.fallback .cursor,
body.fallback .nav-chapter,
body.fallback .shard-card,
body.fallback .hero-hint,
body.fallback .scroll-proxy { display: none !important; }

body.fallback { cursor: auto; background: radial-gradient(120% 90% at 50% 0%, #1c130a 0%, var(--ink) 55%); }
body.fallback a, body.fallback button { cursor: pointer; }

body.fallback .nav {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  background: linear-gradient(to bottom, rgba(11, 10, 8, 0.9), transparent);
}

body.fallback .fallback-note {
  display: block;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 45;
  padding: 0.8em 1em;
  text-align: center;
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--porcelain-faint);
  background: rgba(11, 10, 8, 0.85);
  border-top: 1px solid var(--line);
}

body.fallback .chapters {
  position: static;
  pointer-events: auto;
}
body.fallback .chapter {
  position: relative;
  inset: auto;
  min-height: 88vh;
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
}
body.fallback .chapter-contact { padding-bottom: 10rem; }
body.fallback .footer { padding-bottom: 3.4rem; }

@media (prefers-reduced-motion: reduce) {
  .scroll-hint-line { animation: none; }
  .loader { transition: none; }
  .contact-panel, .contact-backdrop { transition: none; }
}