/* ==========================================================================
   ZERONE STUDIO — Design System
   ========================================================================== */

:root {
  /* Palette */
  --c-bg: #FAFAF7;
  --c-bg-alt: #F1F0EA;
  --c-ink: #111110;
  --c-ink-soft: #6E6C64;
  --c-ink-faint: #767369;
  --c-line: rgba(17, 17, 16, 0.10);
  --c-line-strong: rgba(17, 17, 16, 0.22);
  --c-dark: #0A0A09;
  --c-dark-alt: #151412;
  --c-paper-on-dark: #EEECE4;
  --c-ink-soft-on-dark: #9A968B;
  --c-line-on-dark: rgba(238, 236, 228, 0.14);

  /* Type */
  --f-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;

  --fs-xl: clamp(1.8rem, 3.9vw, 3.7rem);
  --fs-lg: clamp(1.4rem, 2.5vw, 2.4rem);
  --fs-md: clamp(1.2rem, 1.8vw, 1.6rem);
  --fs-body-lg: clamp(1.125rem, 1.4vw, 1.375rem);
  --fs-body: 1rem;
  --fs-small: 0.8125rem;
  --fs-micro: 0.6875rem;

  /* Space */
  --sp-3xs: 0.4rem;
  --sp-xxs: 0.75rem;
  --sp-xs: 1.25rem;
  --sp-sm: 2rem;
  --sp-md: 3.5rem;
  --sp-lg: 6rem;
  --sp-xl: 9.5rem;
  --sp-2xl: 14rem;

  --container-max: 1560px;
  --edge: clamp(1.5rem, 4.5vw, 4.5rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 0.5s;
  --dur-med: 0.9s;
  --dur-slow: 1.4s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
body, h1, h2, h3, h4, p, figure, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea { font: inherit; }

body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--f-sans);
  font-size: var(--fs-body);
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--c-ink); color: var(--c-bg); }

/* Film-grain overlay across whole site */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%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");
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--edge);
  padding-right: var(--edge);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--f-sans);
  font-size: var(--fs-small);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

a:focus-visible, button:focus-visible {
  outline: 1.5px solid var(--c-ink);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 10001;
  background: var(--c-ink);
  color: var(--c-bg);
  padding: 0.8em 1.4em;
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  transition: top .3s var(--ease-out);
}
.skip-link:focus {
  top: 1rem;
}

/* ---------- Curtain / Page Transition ---------- */
#curtain {
  position: fixed;
  inset: 0;
  background: var(--c-dark);
  z-index: 10000;
  transform-origin: bottom;
  pointer-events: none;
}
#curtain::after{
  content:"ZERONE";
  position:absolute; inset:0;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  color: var(--c-paper-on-dark);
  opacity: 0;
}

/* ---------- Custom cursor ---------- */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  will-change: transform;
}
.cursor-dot {
  width: 5px; height: 5px;
  background: var(--c-ink);
  transition: background 0.3s var(--ease-out), opacity .3s;
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid var(--c-line-strong);
  transition: width .35s var(--ease-out), height .35s var(--ease-out),
              border-color .35s var(--ease-out), opacity .3s;
}
.cursor-ring.is-hover { width: 64px; height: 64px; border-color: var(--c-ink); }
.cursor-ring.is-dark { border-color: var(--c-line-on-dark); }
.cursor-ring.is-dark.is-hover { border-color: var(--c-paper-on-dark); }
@media (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: var(--sp-xs) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  mix-blend-mode: difference;
  color: #fff;
  transition: padding .5s var(--ease-out);
}
.site-header .container {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header.is-condensed { padding: var(--sp-xxs) 0; }

.logo {
  font-family: var(--f-sans);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: var(--sp-md); }
.main-nav__list { display: flex; gap: var(--sp-sm); }
.main-nav__link {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 3px;
}
.main-nav__link::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .5s var(--ease-out);
}
.main-nav__link:hover::after { transform: scaleX(1); transform-origin: left; }

.menu-toggle { display: none; }

@media (max-width: 800px) {
  .main-nav__list { display: none; }
  .menu-toggle {
    display: inline-flex;
    font-size: var(--fs-small);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
}

/* ==========================================================================
   Hero — quiet, restrained. A title card, not a billboard.
   ========================================================================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--c-bg);
  color: var(--c-ink);
}
.hero__frame {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 var(--edge);
  max-width: 40rem;
}
.hero__rule {
  width: 28px;
  height: 1px;
  background: var(--c-line-strong);
  margin-bottom: var(--sp-lg);
}
.hero__mark {
  color: var(--c-ink-soft);
  font-size: var(--fs-micro);
  letter-spacing: 0.22em;
  margin-bottom: var(--sp-lg);
}
.hero__mark.eyebrow::before { display: none; }

.hero__tagline {
  font-family: var(--f-sans);
  font-weight: 300;
  font-style: normal;
  font-size: clamp(1.1rem, 2vw, 1.75rem);
  line-height: 1.3;
  letter-spacing: 0.005em;
  color: var(--c-ink);
}
.hero__tagline-line {
  display: block;
}
.hero__tagline-line:not(:last-child) {
  margin-bottom: 0.35em;
}

.hero__scrollcue {
  position: absolute;
  left: 50%;
  bottom: var(--sp-lg);
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9em;
}
.hero__scrollcue-line {
  width: 1px;
  height: 40px;
  background: var(--c-line-strong);
  animation: breathe 3.4s ease-in-out infinite;
}
.hero__scrollcue-label {
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
}
@keyframes breathe {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__scrollcue-line { animation: none; opacity: 0.6; }
}

@media (max-width: 640px) {
  .hero__scrollcue { bottom: var(--sp-md); }
}

/* ==========================================================================
   Section scaffolding
   ========================================================================== */
section { position: relative; }
.section-pad { padding: var(--sp-2xl) 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--sp-md);
  margin-bottom: var(--sp-xl);
}
.section-head__title {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: var(--fs-xl);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.section-head__note {
  max-width: 30ch;
  color: var(--c-ink-soft);
  font-size: var(--fs-body);
  font-weight: 300;
  padding-bottom: 0.3em;
}
@media (max-width: 800px) {
  .section-head { flex-direction: column; align-items: flex-start; gap: var(--sp-xs); }
}

.reveal { opacity: 0; transform: translateY(36px); }
.reveal-img { overflow: hidden; }
.reveal-img img, .reveal-img video { transform: scale(1.18); }

/* ==========================================================================
   Featured Projects — exhibition walk, not a portfolio grid.
   One living frame at a time, generous air between each.
   ========================================================================== */
.work-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2xl);
}

.work-piece { display: block; }

.work-piece__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  max-width: 640px;
  margin: 0 auto;
  overflow: hidden;
  background: var(--c-bg-alt);
}
.work-piece__frame video {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.6s var(--ease-out);
}
.work-piece:hover .work-piece__frame video { transform: scale(1.025); }

.work-piece__caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--sp-xs) var(--sp-sm);
  margin-top: var(--sp-sm);
}
.work-piece__name {
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: var(--fs-body-lg);
  color: var(--c-ink);
}
.work-piece__meta {
  display: flex;
  align-items: baseline;
  gap: 0.6em;
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
}
.work-piece__dot { opacity: 0.5; }

@media (max-width: 700px) {
  .work-piece__frame { max-width: none; }
  .work-piece__caption { flex-direction: column; align-items: flex-start; gap: var(--sp-3xs); }
}

/* ==========================================================================
   Services
   ========================================================================== */
.services-list { border-top: 1px solid var(--c-line); }
.service-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--c-line);
  position: relative;
  transition: padding-left .5s var(--ease-out);
}
.service-row::before{
  content:"";
  position:absolute; inset:0;
  background: var(--c-ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .55s var(--ease-out);
  z-index: 0;
}
.service-row:hover::before { transform: scaleX(1); }
.service-row:hover { color: var(--c-bg); padding-left: var(--sp-xs); }
.service-row > * { position: relative; z-index: 1; }

.service-row__index {
  font-size: var(--fs-small);
  color: var(--c-ink-faint);
  transition: color .5s var(--ease-out);
}
.service-row:hover .service-row__index { color: var(--c-ink-faint); }
.service-row__name {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: var(--fs-md);
}
.service-row__desc {
  color: var(--c-ink-soft);
  font-size: var(--fs-body);
  font-weight: 300;
  max-width: 34ch;
  text-align: right;
  transition: color .5s var(--ease-out);
}
.service-row:hover .service-row__desc { color: var(--c-ink-faint); }

@media (max-width: 800px) {
  .service-row { grid-template-columns: 40px 1fr; row-gap: var(--sp-3xs); }
  .service-row__desc { grid-column: 2; text-align: left; max-width: 40ch; }
}

/* ==========================================================================
   Principles
   ========================================================================== */
.principles {
  background: var(--c-dark);
  color: var(--c-paper-on-dark);
}
.principles .eyebrow { color: var(--c-ink-soft-on-dark); }
.principles .eyebrow::before { background: var(--c-ink-soft-on-dark); }
.principles .section-head__title { color: var(--c-paper-on-dark); }
.principles .section-head__note { color: var(--c-ink-soft-on-dark); }

.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--c-line-on-dark);
  border-left: 1px solid var(--c-line-on-dark);
}
.principle-cell {
  padding: var(--sp-md) var(--sp-sm);
  border-right: 1px solid var(--c-line-on-dark);
  border-bottom: 1px solid var(--c-line-on-dark);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.principle-cell__index {
  font-size: var(--fs-small);
  color: var(--c-ink-soft-on-dark);
  letter-spacing: 0.1em;
}
.principle-cell__title {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: var(--fs-md);
  letter-spacing: -0.005em;
  margin-top: var(--sp-lg);
  line-height: 1.15;
}
.principle-cell:nth-child(5) {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  min-height: 140px;
}
.principle-cell:nth-child(5) .principle-cell__title { margin-top: 0; font-size: var(--fs-lg); }

@media (max-width: 800px) {
  .principles-grid { grid-template-columns: 1fr; }
  .principle-cell:nth-child(5) { flex-direction: column; align-items: flex-start; gap: var(--sp-xs); }
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { text-align: left; }
.contact .eyebrow { margin-bottom: var(--sp-sm); }
.contact__title {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: clamp(1.6rem, 4vw, 4rem);
  line-height: 1.1;
  max-width: 22ch;
  margin-bottom: var(--sp-xl);
}
.contact__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--c-line);
}
.contact__email,
.contact__soon {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: clamp(1.1rem, 2.2vw, 1.8rem);
  position: relative;
  padding-bottom: 0.15em;
}
.contact__email::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0.14);
  transform-origin: left;
  transition: transform .6s var(--ease-out);
}
.contact__email:hover::after { transform: scaleX(1); }
.contact__meta { color: var(--c-ink-soft); font-size: var(--fs-small); letter-spacing: 0.06em; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: var(--sp-sm) 0;
  border-top: 1px solid var(--c-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
}
.to-top { color: var(--c-ink-soft); }
.to-top:hover { color: var(--c-ink); }

@media (max-width: 640px) {
  .site-footer { flex-direction: column; gap: var(--sp-xs); text-align: center; }
}

/* ==========================================================================
   Project pages
   ========================================================================== */
.proj-hero {
  position: relative;
  height: 100svh;
  min-height: 520px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--c-dark);
  color: var(--c-paper-on-dark);
}
.proj-hero__media { position: absolute; inset: -6% -2%; z-index: 0; }
.proj-hero__media img {
  width: 100%; height: 100%; object-fit: cover; transform: scale(1.08);
}
.proj-hero__media video {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover; transform: scale(1.08);
}
.proj-hero__scrim {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10,10,9,0.25) 0%, rgba(10,10,9,0.1) 30%, rgba(10,10,9,0.78) 100%);
}
.proj-hero__content {
  position: relative; z-index: 2;
  width: 100%;
  padding: 0 var(--edge) var(--sp-lg);
}
.proj-hero__index {
  font-size: var(--fs-small);
  letter-spacing: 0.14em;
  color: var(--c-ink-soft-on-dark);
  margin-bottom: var(--sp-sm);
}
.proj-hero__title {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: clamp(1.8rem, 4.9vw, 4.5rem);
  line-height: 1.08;
  max-width: 18ch;
}
.proj-hero__cat {
  margin-top: var(--sp-sm);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--f-sans);
  color: var(--c-ink-soft-on-dark);
}

.proj-meta {
  padding: var(--sp-xl) 0 var(--sp-lg);
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 6vw, 8rem);
  border-bottom: 1px solid var(--c-line);
}
.proj-meta__cols { display: flex; gap: clamp(2rem, 5vw, 5rem); }
.proj-meta__col h3 {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
  margin-bottom: var(--sp-xs);
}
.proj-meta__col ul li {
  font-family: var(--f-sans);
  font-size: var(--fs-body-lg);
  font-weight: 300;
  padding: 0.3em 0;
}
.proj-meta__desc {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: var(--fs-md);
  line-height: 1.4;
  max-width: 46ch;
}
@media (max-width: 900px) {
  .proj-meta { grid-template-columns: 1fr; gap: var(--sp-md); }
  .proj-meta__cols { gap: var(--sp-lg); }
}

.proj-gallery {
  padding: var(--sp-lg) 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-xs);
}
.proj-gallery figure { overflow: hidden; background: var(--c-bg-alt); aspect-ratio: 4/5; }
.proj-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease-out); }
.proj-gallery figure:hover img { transform: scale(1.05); }
@media (max-width: 800px) {
  .proj-gallery { grid-template-columns: 1fr; }
}

.next-project {
  display: block;
  position: relative;
  height: 62vh;
  min-height: 420px;
  overflow: hidden;
  background: var(--c-dark);
  color: var(--c-paper-on-dark);
}
.next-project__media { position: absolute; inset: 0; }
.next-project__media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; transition: transform 1.3s var(--ease-out), opacity .6s; }
.next-project:hover .next-project__media img { transform: scale(1.05); opacity: 0.7; }
.next-project__scrim { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,10,9,0.55), rgba(10,10,9,0.55)); }
.next-project__content {
  position: relative; z-index: 1;
  height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  gap: var(--sp-xs);
}
.next-project__label { font-size: var(--fs-small); letter-spacing: 0.16em; text-transform: uppercase; color: var(--c-ink-soft-on-dark); }
.next-project__title {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: clamp(1.55rem, 4.2vw, 3.2rem);
}

.proj-footer-space { height: 0; }