/* ============================================================
   NextArc — Components
   ============================================================ */

/* —— Intro curtain (pure-CSS, auto-lifts; once per session via .no-intro) —— */
.curtain {
  position: fixed; inset: 0; z-index: 200; pointer-events: none;
  background: var(--ink);
  display: grid; place-items: center;
  animation: curtain-lift 2.1s var(--ease-inout) forwards;
}
.curtain__mark {
  width: min(42vw, 240px); opacity: 0;
  animation: curtain-mark 1.6s var(--ease) forwards;
}
@keyframes curtain-mark {
  0% { opacity: 0; transform: translateY(14px); }
  35% { opacity: 1; transform: none; }
  72% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes curtain-lift {
  0%, 68% { transform: translateY(0); }
  100% { transform: translateY(-100%); }
}
html.no-intro .curtain { display: none; }
@media (prefers-reduced-motion: reduce) { .curtain { display: none; } }

/* (custom cursor removed — its blend-mode repaint every frame hurt scroll smoothness) */

/* —— Site header —— */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: flex-start; gap: clamp(1rem, 2.4vw, 2rem);
  padding: clamp(1.1rem, 2.2vw, 1.9rem) var(--gutter);
  transition: padding .5s var(--ease), background-color .5s var(--ease);
}
.site-header.is-scrolled {
  padding-block: 0.85rem;
  background: color-mix(in srgb, var(--ink) 92%, transparent);
  border-bottom: 1px solid var(--hairline);
}
.brand { display: inline-flex; align-items: center; gap: .55rem; }
.brand__logo { height: clamp(24px, 3.2vw, 30px); width: auto; }
.brand__word { font-family: var(--sans); font-weight: 500; font-size: .92rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg); }

.nav { display: flex; align-items: center; gap: clamp(1.4rem, 2.4vw, 2.6rem); margin-left: auto; }
.site-header__actions { display: inline-flex; align-items: center; gap: clamp(.7rem, 1.8vw, 1.2rem); }
.nav__link {
  position: relative;
  font-family: var(--sans);
  font-weight: 500;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
  padding-block: .35rem;
}
.nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: var(--gold);
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease-inout);
}
.nav__link:hover::after, .nav__link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav__link[aria-current="page"] { color: var(--gold); }

.nav-toggle { display: none; }

/* —— Mobile nav —— */
@media (max-width: 800px) {
  .site-header__actions { margin-left: auto; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 5px; z-index: 120;
    width: 30px; padding: 6px 0;
  }
  .nav-toggle span { height: 1.5px; background: var(--fg); transition: transform .4s var(--ease), opacity .3s; }
  .nav {
    position: fixed; inset: 0; z-index: 110;
    flex-direction: column; justify-content: center; align-items: flex-start;
    gap: clamp(1.2rem, 4vh, 2rem);
    padding: 0 var(--gutter);
    background: var(--ink);
    clip-path: inset(0 0 100% 0);
    transition: clip-path .7s var(--ease-inout);
  }
  .nav__link { font-size: clamp(1.6rem, 7vw, 2.4rem); letter-spacing: 0.02em; font-family: var(--display); text-transform: none; }
  body.nav-open .nav { clip-path: inset(0 0 0 0); }
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-block: clamp(7rem, 18vh, 11rem) clamp(3rem, 8vh, 5rem);
  overflow: hidden;
}
.hero__glow {
  position: absolute; z-index: 0; pointer-events: none;
  width: min(120vw, 1100px); aspect-ratio: 1;
  left: 50%; top: 38%; translate: -50% -50%;
  background: radial-gradient(circle at center,
      color-mix(in srgb, var(--gold) 26%, transparent) 0%,
      color-mix(in srgb, var(--gold) 8%, transparent) 32%,
      transparent 62%);
  filter: blur(8px);
  opacity: .9;
}
.hero > .wrap { position: relative; z-index: 1; }
.hero__headline { max-width: 20ch; font-size: var(--fs-hero); }
.hero__lead { margin-top: clamp(1.6rem, 3.4vh, 2.6rem); max-width: 34rem; color: var(--fg); }
.hero__scroll {
  position: absolute; left: var(--gutter); bottom: clamp(1.6rem, 4vh, 2.6rem); z-index: 1;
  font-size: var(--fs-eyebrow); letter-spacing: .18em; text-transform: uppercase; color: var(--muted);
  display: inline-flex; align-items: center; gap: .7rem;
}
.hero__scroll::before { content: ""; width: 34px; height: 1px; background: var(--muted); display: inline-block; }

/* —— Animated text-link (the editorial underline) —— */
.link {
  position: relative; color: var(--fg); display: inline-block;
}
.link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--ease-inout);
}
.link:hover::after { transform: scaleX(1); transform-origin: left; }
.link--gold { color: var(--gold); }
.link--arrow { display: inline-flex; align-items: center; gap: .55rem; }
.link--arrow svg { width: 1em; height: 1em; transition: transform .5s var(--ease); }
.link--arrow:hover svg { transform: translateX(.35rem); }

/* —— Case study block —— */
.case { max-width: var(--measure-wide); }
.case__metric {
  font-family: var(--display); font-weight: 360;
  font-size: var(--fs-h2); line-height: 1.1; letter-spacing: -0.015em;
  margin-top: 1.1rem; color: var(--fg);
}
.case__accent { width: 56px; height: 2px; background: var(--gold); margin: 1.6rem 0 1.8rem; }
.case__body { color: var(--fg); max-width: var(--measure); }
.case__quote {
  font-family: var(--display); font-style: italic; font-weight: 360;
  font-size: var(--fs-h3); line-height: 1.4; color: var(--bone);
  max-width: var(--measure); margin-top: 1.6rem;
}
.case__quote cite { display: block; margin-top: .9rem; font-style: normal; font-family: var(--sans); font-size: var(--fs-small); letter-spacing: .04em; color: var(--muted); }
.case + .case { margin-top: clamp(var(--space-5), 9vh, var(--space-7)); padding-top: clamp(var(--space-5), 9vh, var(--space-7)); border-top: 1px solid var(--hairline); }
/* A metric-less "statement" case: larger body so it reads as a deliberate result, not an orphan. */
.case--statement .case__body { font-size: var(--fs-lead); line-height: 1.5; color: var(--bone); max-width: var(--measure); }
.case--statement .case__accent { margin-top: .4rem; }

/* —— Contact line —— */
.contact-line { font-family: var(--display); font-weight: 340; font-size: var(--fs-h2); line-height: 1.25; max-width: 24ch; letter-spacing: -0.01em; }
.contact-email {
  display: inline-block; margin-top: clamp(1.4rem, 3vh, 2.2rem);
  font-family: var(--sans); font-size: var(--fs-lead); letter-spacing: .01em; color: var(--gold);
}

/* —— Page intro (sub-pages) —— */
.page-intro { padding-block: clamp(8rem, 22vh, 13rem) clamp(2rem, 6vh, 4rem); }
.page-intro__title { max-width: 18ch; }

/* —— Footer —— */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--hairline);
  padding-block: clamp(3.5rem, 9vh, 6rem);
}
.site-footer__inner { display: flex; flex-direction: column; gap: clamp(1.6rem, 4vh, 2.6rem); }
.site-footer__email { font-family: var(--display); font-weight: 340; font-size: clamp(1.6rem, 1rem + 2.2vw, 2.6rem); letter-spacing: -0.01em; color: var(--gold); }
.site-footer__row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .6rem 1.5rem; padding-top: clamp(1.4rem, 3vh, 2.2rem); border-top: 1px solid var(--hairline); }
.site-footer__legal { font-size: var(--fs-small); letter-spacing: .03em; color: var(--muted); }
.site-footer__links { display: inline-flex; gap: 1.6rem; }
.site-footer__links a { font-size: var(--fs-small); letter-spacing: .03em; color: var(--muted); }
.site-footer__links a:hover { color: var(--fg); }

/* —— Hero background image (atmospheric; replaces the CSS radial glow) —— */
.hero__bg {
  position: absolute; inset: -10% 0; z-index: 0; pointer-events: none;
  background: url('/assets/img/architecture.jpg') no-repeat;
  background-size: cover; background-position: 58% 28%;
  filter: grayscale(1) brightness(0.82) contrast(1.12);
  opacity: 0.92;
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--ink) 58%, transparent) 0%, color-mix(in srgb, var(--ink) 20%, transparent) 56%, transparent 100%),
    linear-gradient(0deg, var(--ink), transparent 62%);
}

/* —— Sub-page title —— */
.page-intro__title { font-size: clamp(2.3rem, 1.7rem + 2.4vw, 3.4rem); line-height: 1.05; letter-spacing: -0.02em; font-weight: 330; max-width: 20ch; }

/* —— Prose —— */
.prose p { font-size: var(--fs-lead); line-height: 1.6; color: var(--fg); }
.prose p + p { margin-top: 1.4em; }
.prose .muted, .prose em { color: var(--muted); }

/* —— Full-bleed atmospheric image band —— */
.feature-image {
  position: relative; width: 100%; height: clamp(320px, 55vh, 560px);
  background: var(--feat) center / cover no-repeat;
  filter: grayscale(1) contrast(1.28) brightness(0.78);
}
.feature-image::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(0deg, var(--ink), transparent 24%, transparent 76%, var(--ink));
}
.feature-image--band { height: clamp(280px, 38vh, 420px); filter: grayscale(1) contrast(1.05) brightness(0.72); }

/* —— Film grain (generated) + faint vignette + viewport frame —— */
.grain { position: fixed; inset: 0; z-index: 9990; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.vignette { position: fixed; inset: 0; z-index: 9988; pointer-events: none;
  background: radial-gradient(125% 105% at 50% 38%, transparent 58%, rgba(0,0,0,.42) 100%); }
.frame { position: fixed; inset: 18px; z-index: 9989; pointer-events: none; border: 1px solid var(--hairline); }
@media (max-width: 680px) { .frame { inset: 10px; } }
@media (prefers-reduced-motion: reduce) { .grain { display: none; } }

/* —— Case numerals (editorial structure) —— */
.case__num { font-family: var(--display); font-size: clamp(2.4rem, 5vw, 3.75rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--hairline);
  font-feature-settings: "lnum" 1, "tnum" 1; margin-bottom: 0.6rem; }
.case__metric { font-feature-settings: "lnum" 1, "tnum" 1, "kern" 1; }

/* —— Image-backed page header (e.g., Work) —— */
.page-intro--image { position: relative; isolation: isolate; padding-block: clamp(9rem, 26vh, 14rem) clamp(2.5rem, 7vh, 4.5rem); }
.page-intro--image::before { content: ""; position: absolute; inset: 0; z-index: -2;
  background: var(--feat) center / cover no-repeat; filter: grayscale(1) brightness(0.70) contrast(1.18); }
.page-intro--image::after { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(0deg, var(--ink), color-mix(in srgb, var(--ink) 28%, transparent) 52%, color-mix(in srgb, var(--ink) 12%, transparent)); }
/* Approach: ink-in-water, inverted to drifting light smoke on near-black (keeps the title legible). */
.page-intro--image.page-intro--ink::before { filter: grayscale(1) invert(1) brightness(0.62) contrast(1.16); }

/* —— Button —— */
.btn { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--sans); font-size: var(--fs-eyebrow); font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); border: 1px solid var(--gold); background: transparent; padding: .9rem 1.8rem; cursor: pointer; transition: background-color .4s var(--ease), color .4s var(--ease); }
.btn:hover { background: var(--gold); color: var(--ink); }
.btn--lg { padding: 1.05rem 2.3rem; font-size: var(--fs-small); }
.btn--sm { padding: .6rem 1.15rem; font-size: 0.72rem; letter-spacing: .14em; }
.contact-cta-wrap { margin-top: clamp(1.6rem, 3vh, 2.4rem); }
button.site-footer__email { border: 0; background: transparent; cursor: pointer; text-align: left; padding: 0; }

/* —— Contact modal —— */
.modal { position: fixed; inset: 0; z-index: 9995; display: none; align-items: center; justify-content: center; padding: var(--gutter); }
.modal.is-open { display: flex; }
.modal__backdrop { position: absolute; inset: 0; background: color-mix(in srgb, var(--ink) 84%, transparent); backdrop-filter: blur(6px); }
.modal__panel { position: relative; z-index: 1; width: 100%; max-width: 34rem; background: var(--surface); border: 1px solid var(--hairline); padding: clamp(1.7rem, 4vw, 2.6rem); max-height: 90vh; overflow: auto; }
.modal__close { position: absolute; top: .5rem; right: .85rem; font-size: 1.7rem; line-height: 1; color: var(--muted); }
.modal__close:hover { color: var(--fg); }
.modal__line { font-family: var(--display); font-weight: 340; font-size: var(--fs-h3); line-height: 1.3; margin: .4rem 0 1.5rem; max-width: 26ch; }

/* —— Contact form —— */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.cf-field { display: flex; flex-direction: column; gap: .4rem; }
.cf-field label { font-size: var(--fs-eyebrow); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.cf-field input, .cf-field textarea { font-family: var(--sans); font-size: 1rem; color: var(--fg); background: color-mix(in srgb, var(--ink) 60%, transparent); border: 1px solid var(--hairline); padding: .72rem .9rem; border-radius: 0; }
.cf-field input:focus, .cf-field textarea:focus { outline: none; border-color: var(--gold); }
.cf-field textarea { resize: vertical; }
.cf-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.cf-submit { align-self: flex-start; margin-top: .3rem; }
.cf-status { font-size: var(--fs-small); color: var(--muted); min-height: 1.2em; }
.cf-status.is-ok { color: var(--gold); }
.cf-status.is-err { color: #db8a66; }
.contact-page__form { margin-top: clamp(1.8rem, 4vh, 2.8rem); }

/* —— About —— */
.about-grid { display: grid; grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); gap: clamp(1.8rem, 5vw, 4rem); align-items: start; }
.portrait { margin: 0; }
.portrait img { width: 100%; height: auto; filter: grayscale(1) contrast(1.06); border: 1px solid var(--hairline); }
.about-copy .about-draft { margin-top: 1.6rem; font-size: var(--fs-small); color: var(--muted); }
@media (max-width: 760px) { .about-grid { grid-template-columns: 1fr; } .portrait { max-width: 20rem; } }

/* —— Page-intro glow (no image) —— */
.page-intro--glow { position: relative; isolation: isolate; }
.page-intro--glow::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(70% 90% at 50% 32%, color-mix(in srgb, var(--gold) 16%, transparent), transparent 70%); }

/* —— Bokeh whisper behind a section —— */
.section--bokeh { position: relative; isolation: isolate; }
.section--bokeh::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: url('/assets/img/bokeh.jpg') center / cover no-repeat;
  opacity: 0.3;
}