/* ==========================================================================
   base.css  |  tokens, reset, typography, page furniture
   ========================================================================== */

:root {
  /* Surface. Never flat black, always a little warmth underneath. */
  --ink-900: #060607;
  --ink-800: #0a0a0c;
  --ink-700: #0f0f12;
  --ink-600: #16161a;

  /* Ambient hues, only ever seen at low opacity */
  --hue-emerald: #0b3a30;
  --hue-gold:    #443417;
  --hue-violet:  #20182e;

  /* Ink on paper */
  --paper:       #f4f1ec;
  --paper-80:    rgba(244, 241, 236, 0.80);
  --paper-58:    rgba(244, 241, 236, 0.58);
  --paper-38:    rgba(244, 241, 236, 0.38);
  --paper-22:    rgba(244, 241, 236, 0.22);

  /* Accent, rationed */
  --gold:        #c9a86a;
  --gold-lift:   #e2caa0;
  --gold-40:     rgba(201, 168, 106, 0.40);
  --gold-18:     rgba(201, 168, 106, 0.18);
  --gold-08:     rgba(201, 168, 106, 0.08);

  /* Hairlines and glass */
  --line:        rgba(244, 241, 236, 0.10);
  --line-soft:   rgba(244, 241, 236, 0.055);
  --glass:       rgba(244, 241, 236, 0.022);
  --blur:        blur(18px);

  /* Type */
  --serif: "Fraunces", Canela, Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --fs-hero:    clamp(3.4rem, 12.5vw, 11rem);
  --fs-display: clamp(2.3rem, 5.6vw, 5rem);
  --fs-title:   clamp(1.7rem, 3.2vw, 2.6rem);
  --fs-lead:    clamp(1.16rem, 1.7vw, 1.5rem);
  --fs-body:    clamp(1rem, 0.97rem + 0.16vw, 1.06rem);
  --fs-small:   0.82rem;
  --fs-micro:   0.66rem;

  --track-micro: 0.26em;
  --track-nav:   0.17em;

  /* Motion, unhurried throughout */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.33, 0, 0.15, 1);
  --ease-io:   cubic-bezier(0.65, 0, 0.35, 1);
  --t-1: 620ms;
  --t-2: 900ms;
  --t-3: 1200ms;

  /* Rhythm */
  --gutter: clamp(1.35rem, 5vw, 6.5rem);
  --rail-w: 0px;
  --shelf:  clamp(6rem, 15vh, 13rem);
  --measure: 60ch;
}

/* The rail needs its own column plus real clearance before content starts */
@media (min-width: 90rem) { :root { --rail-w: 15rem; } }

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--sans);
  font-weight: 300;
  font-size: var(--fs-body);
  line-height: 1.78;
  letter-spacing: 0.004em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-booting,
body.no-scroll { overflow: hidden; height: 100svh; }

img, video, canvas { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-variation-settings: "opsz" 100;
  line-height: 1.02;
  letter-spacing: -0.021em;
  text-wrap: balance;
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
ol, ul { margin: 0; padding: 0; list-style: none; }

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 5px;
}

::selection { background: var(--gold-40); color: var(--paper); }

.skip-link {
  position: fixed;
  top: 0; left: 50%;
  transform: translate(-50%, -130%);
  z-index: 220;
  padding: 0.8rem 1.6rem;
  background: var(--ink-700);
  border: 1px solid var(--line);
  font-size: var(--fs-micro);
  letter-spacing: var(--track-micro);
  text-transform: uppercase;
}
.skip-link:focus { transform: translate(-50%, 0); }

/* --------------------------------------------------------------------------
   Ambient field
   -------------------------------------------------------------------------- */

.ambient {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: var(--ink-900);
}

.ambient__wash {
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(44% 36% at 20% 24%, color-mix(in oklab, var(--hue-emerald) 72%, transparent) 0%, transparent 66%),
    radial-gradient(38% 32% at 80% 32%, color-mix(in oklab, var(--hue-gold) 60%, transparent) 0%, transparent 64%),
    radial-gradient(50% 42% at 52% 86%, color-mix(in oklab, var(--hue-violet) 74%, transparent) 0%, transparent 68%);
  filter: blur(44px) saturate(115%);
  opacity: 0.60;
  animation: breathe 38s var(--ease-soft) infinite;
  transition: opacity 2200ms ease;
  will-change: transform, opacity;
}

.ambient__gl {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 2200ms ease;
}

.ambient.gl-live .ambient__wash { opacity: 0.18; }
.ambient.gl-live .ambient__gl { opacity: 0.92; }

.ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(125% 92% at 50% 44%, transparent 26%, rgba(6, 6, 7, 0.80) 100%);
}

/* --------------------------------------------------------------------------
   Film grain
   -------------------------------------------------------------------------- */

.grain {
  position: fixed;
  inset: -70px;
  z-index: 95;
  pointer-events: none;
  opacity: 0.26;
  mix-blend-mode: overlay;
  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='0.86' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  animation: grain-shift 760ms steps(1) infinite;
}

/* --------------------------------------------------------------------------
   Overture: loader then curtain
   -------------------------------------------------------------------------- */

.loader {
  position: fixed;
  inset: 0;
  z-index: 140;
  display: grid;
  place-items: center;
  background: #040405;
  transition: opacity var(--t-2) var(--ease-soft);
}
.loader.is-gone { opacity: 0; pointer-events: none; }

.loader__inner { display: grid; justify-items: center; gap: 1.6rem; }

.loader__mark {
  font-family: var(--serif);
  font-size: 0.94rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--paper-38);
  padding-left: 0.42em;
}

.loader__track {
  position: relative;
  width: clamp(9rem, 22vw, 15rem);
  height: 1px;
  background: var(--line);
  overflow: hidden;
}
.loader__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--gold);
  transition: width 260ms linear;
}

.loader__count {
  font-size: var(--fs-micro);
  letter-spacing: 0.3em;
  color: var(--paper-22);
  font-variant-numeric: tabular-nums;
}

.curtain {
  position: fixed;
  inset: 0;
  z-index: 135;
  pointer-events: none;
}
.curtain__panel {
  position: absolute;
  top: -1px; bottom: -1px;
  width: 50.4%;
  background: #040405;
  will-change: transform;
  transition: transform 2000ms var(--ease-out);
}
.curtain__panel--l { left: 0;  box-shadow: 30px 0 80px rgba(0,0,0,0.95); }
.curtain__panel--r { right: 0; box-shadow: -30px 0 80px rgba(0,0,0,0.95); }

.curtain__seam {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, transparent, var(--gold-40) 45%, transparent);
  opacity: 0;
  transition: opacity 500ms ease;
}
.curtain.is-parting .curtain__seam { opacity: 1; }
.curtain.is-open .curtain__panel--l { transform: translate3d(-101%, 0, 0); }
.curtain.is-open .curtain__panel--r { transform: translate3d(101%, 0, 0); }
.curtain.is-open .curtain__seam { opacity: 0; }
.curtain.is-done { display: none; }

/* --------------------------------------------------------------------------
   Cursor, fine pointers only
   -------------------------------------------------------------------------- */

.cursor { display: none; }

@media (hover: hover) and (pointer: fine) {
  .cursor {
    display: block;
    position: fixed;
    top: 0; left: 0;
    z-index: 160;
    pointer-events: none;
    opacity: 0;
    transition: opacity 500ms ease;
  }
  .cursor.is-awake { opacity: 1; }

  .cursor__dot,
  .cursor__ring,
  .cursor__label {
    position: absolute;
    transform: translate(-50%, -50%);
  }
  .cursor__dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--gold-lift);
  }
  .cursor__ring {
    width: 34px; height: 34px;
    border-radius: 50%;
    border: 1px solid var(--gold-40);
    background: radial-gradient(circle, rgba(201,168,106,0.10) 0%, transparent 62%);
    transition: width var(--t-1) var(--ease-out), height var(--t-1) var(--ease-out),
                border-color var(--t-1) ease, background-color var(--t-1) ease;
  }
  .cursor__label {
    display: grid;
    place-items: center;
    width: 92px; height: 92px;
    font-size: var(--fs-micro);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-900);
    opacity: 0;
    transition: opacity 400ms ease;
    font-variant-numeric: tabular-nums;
  }

  .cursor.is-hot .cursor__ring { width: 62px; height: 62px; border-color: var(--gold-18); }
  .cursor.is-labelled .cursor__ring {
    width: 92px; height: 92px;
    background: var(--gold);
    border-color: transparent;
  }
  .cursor.is-labelled .cursor__dot { opacity: 0; }
  .cursor.is-labelled .cursor__label { opacity: 1; }

  body:has(.cursor.is-awake) { cursor: none; }
  body:has(.cursor.is-awake) a,
  body:has(.cursor.is-awake) button,
  body:has(.cursor.is-awake) input,
  body:has(.cursor.is-awake) textarea,
  body:has(.cursor.is-awake) label { cursor: none; }
}

/* --------------------------------------------------------------------------
   Chapter rail
   -------------------------------------------------------------------------- */

.rail { display: none; }

@media (min-width: 90rem) {
  .rail {
    display: block;
    position: fixed;
    top: 50%;
    left: clamp(2rem, 3.4vw, 3.6rem);
    transform: translateY(-50%);
    z-index: 90;
    opacity: 0;
    transition: opacity var(--t-3) ease;
  }
  .rail.is-visible { opacity: 1; }
  /* The filmstrip travels across the full width, so the rail steps aside */
  .rail.is-visible.is-dim { opacity: 0; }

  .rail__line {
    position: absolute;
    left: 0; top: 0.5rem; bottom: 0.5rem;
    width: 1px;
    background: var(--line-soft);
  }
  .rail__progress {
    position: absolute;
    inset: 0 0 auto 0;
    height: 0%;
    background: var(--gold);
    transform-origin: top;
  }

  .rail__list { display: grid; gap: 1.05rem; padding-left: 1.35rem; }
  .rail__list a {
    display: flex;
    align-items: baseline;
    gap: 0.7rem;
    font-size: var(--fs-micro);
    letter-spacing: var(--track-micro);
    text-transform: uppercase;
    color: var(--paper-22);
    transition: color var(--t-1) ease;
  }
  .rail__list i {
    font-style: normal;
    font-variant-numeric: tabular-nums;
    opacity: 0.6;
  }
  .rail__list span {
    display: inline-block;
    transition: transform var(--t-1) var(--ease-out);
  }
  .rail__list a:hover { color: var(--paper-58); }
  .rail__list a:hover span { transform: translateX(3px); }
  .rail__list a.is-current { color: var(--gold); }
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.05rem, 2.2vw, 1.7rem) var(--gutter);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--t-3) ease, transform var(--t-3) var(--ease-out),
              background-color var(--t-1) ease, border-color var(--t-1) ease;
  border-bottom: 1px solid transparent;
}
.nav.is-visible { opacity: 1; transform: none; }
.nav.is-stuck {
  background: rgba(6, 6, 7, 0.62);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom-color: var(--line-soft);
}

.nav__mark { display: block; }
.nav__initials {
  display: block;
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.26em;
  color: var(--paper-58);
  padding-left: 0.26em;
  transition: color var(--t-1) ease;
}
.nav__mark:hover .nav__initials { color: var(--gold); }

.nav__links {
  display: flex;
  gap: clamp(1.1rem, 2.8vw, 2.6rem);
  font-size: var(--fs-micro);
  letter-spacing: var(--track-nav);
  text-transform: uppercase;
}
.nav__links a {
  position: relative;
  display: block;
  overflow: hidden;
  color: var(--paper-38);
  transition: color var(--t-1) ease;
}
.nav__links a span {
  display: block;
  transition: transform var(--t-2) var(--ease-out);
}
.nav__links a::before {
  content: attr(href);
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-2) var(--ease-out);
}
.nav__links a:hover { color: var(--paper); }
.nav__links a:hover span { transform: translateY(-1px); }
.nav__links a:hover::before { transform: scaleX(1); }
.nav__links a:active span { transform: translateY(0) scale(0.97); }

@media (max-width: 30rem) {
  .nav { padding-inline: 0.95rem; gap: 0.5rem; }
  .nav__initials { font-size: 0.84rem; letter-spacing: 0.16em; }
  .nav__links { gap: 0.62rem; font-size: 0.53rem; letter-spacing: 0.06em; }
}

/* --------------------------------------------------------------------------
   Cutout subjects
   A transparent subject standing in a breathing pool of light.

   Nothing here puts a mask and a filter on the same element. WebKit applies
   the filter to the element box rather than the alpha silhouette in that
   combination, which paints a hard rectangle around the cutout.
   -------------------------------------------------------------------------- */

.cut {
  position: relative;
  display: block;
  margin: 0;
}

.cut__img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 56px rgba(0, 0, 0, 0.6)) contrast(1.04) saturate(0.99);
}

/* Breathing aura. Three pools of colour, blurred, drifting on a slow cycle. */
.cut__aura {
  position: absolute;
  left: 50%; top: 48%;
  width: 122%; height: 122%;
  transform: translate(-50%, -50%);
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(34% 30% at 43% 40%, rgba(201, 168, 106, 0.40) 0%, transparent 72%),
    radial-gradient(38% 34% at 61% 58%, rgba(18, 108, 88, 0.36) 0%, transparent 74%),
    radial-gradient(56% 50% at 50% 52%, rgba(64, 46, 98, 0.28) 0%, transparent 78%);
  filter: blur(40px) saturate(125%);
  animation: aura 14s var(--ease-soft) infinite;
  will-change: transform, opacity;
}

/* Contact light where the subject meets the floor */
.cut__floor {
  position: absolute;
  left: 50%; bottom: 1%;
  width: 74%; height: 16%;
  transform: translateX(-50%);
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(201, 168, 106, 0.26) 0%, transparent 70%);
  filter: blur(20px);
  animation: aura-floor 14s var(--ease-soft) infinite;
}

/* A soft radial scrim rising from the base, so type can sit inside the fade.
   Radial means it has no edge anywhere. */
.cut__dissolve {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 48%;
  z-index: 3;
  pointer-events: none;
  background: radial-gradient(74% 100% at 50% 104%,
    rgba(6, 6, 7, 0.94) 0%,
    rgba(6, 6, 7, 0.66) 40%,
    rgba(6, 6, 7, 0.24) 66%,
    transparent 84%);
}

/* --------------------------------------------------------------------------
   Shared parts
   -------------------------------------------------------------------------- */

.chapter {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: var(--fs-micro);
  letter-spacing: var(--track-micro);
  text-transform: uppercase;
  color: var(--gold);
}
.chapter i {
  font-style: normal;
  font-variant-numeric: tabular-nums;
  color: var(--paper-22);
}
.chapter i::after {
  content: "";
  display: inline-block;
  width: clamp(1.4rem, 3vw, 2.6rem);
  height: 1px;
  margin-left: 0.85rem;
  vertical-align: 0.28em;
  background: var(--line);
}

.btn {
  position: relative;
  display: inline-block;
  padding-block: 0.7rem;
  font-size: var(--fs-micro);
  letter-spacing: var(--track-micro);
  text-transform: uppercase;
  color: var(--paper);
  transition: color var(--t-1) ease;
}
.btn__rule {
  position: absolute;
  left: 0; right: 0; bottom: 0.35rem;
  height: 1px;
  background: var(--line);
  overflow: hidden;
}
.btn__rule::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: translateX(-101%);
  transition: transform var(--t-3) var(--ease-out);
}
.btn:hover { color: var(--gold-lift); }
.btn:hover .btn__rule::after { transform: none; }
.btn:active .btn__label { display: inline-block; transform: scale(0.97); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.footer {
  padding: clamp(4rem, 9vh, 7rem) var(--gutter) clamp(2.2rem, 5vh, 3.4rem);
  padding-left: max(var(--gutter), var(--rail-w));
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.footer__name {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--paper-58);
}
.footer__meta {
  display: flex;
  gap: clamp(1rem, 3vw, 2.4rem);
  font-size: var(--fs-micro);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-22);
  font-variant-numeric: tabular-nums;
}