/* ============================================================
   Isohel — design tokens
   ============================================================ */
:root{
  --paper: #FAFAF8;
  --paper-dim: #F1F0EB;
  --ink: #111111;
  --ink-soft: #4a4a48;
  --ink-faint: #6b6b67;
  --accent: #2F4BE0;
  --rule: rgba(17,17,17,0.14);

  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4.5rem;
  --sp-9: 6.5rem;
  --sp-10: 9rem;

  --fs-eyebrow: 0.75rem;
  --fs-caption: 0.8125rem;
  --fs-nav: 0.8125rem;
  --fs-body: 1.0625rem;
  --fs-lead: 1.1875rem;
  --fs-h3: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  --fs-h2: clamp(2.25rem, 1.6rem + 2.6vw, 3.75rem);
  --fs-h1: clamp(2.75rem, 1.6rem + 4.2vw, 4.5rem);

  --ease-breathe: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-breathe: 1.4s;
  --dur-ui: 200ms;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
}

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img{ max-width: 100%; display: block; }

a{ color: inherit; }

.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-3) var(--sp-4);
  z-index: 999;
}
.skip-link:focus{ left: var(--sp-3); top: var(--sp-3); }

:focus{ outline: none; }
:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

em{ font-style: italic; }

/* ============================================================
   Masthead / nav
   ============================================================ */
.masthead{
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250,250,248,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.masthead__inner{
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-6);
}
.wordmark{
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  flex-shrink: 0;
}
.wordmark__mark{
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.5rem;
  letter-spacing: 0.01em;
}
.wordmark__sub{
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--ink-faint);
  display: none;
}
@media (min-width: 720px){
  .wordmark__sub{ display: inline; }
}

.primary-nav{
  display: none;
  align-items: center;
  gap: var(--sp-6);
}
@media (min-width: 860px){
  .primary-nav{ display: flex; }
}
.primary-nav a{
  text-decoration: none;
  font-size: var(--fs-nav);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  padding-bottom: 3px;
  transition: color var(--dur-ui) ease;
}
.primary-nav a::after{
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right var(--dur-ui) ease;
}
.primary-nav a:hover,
.primary-nav a:focus-visible{ color: var(--accent); }
.primary-nav a:hover::after,
.primary-nav a:focus-visible::after{ right: 0; }

.index-toggle{
  font-family: var(--sans);
  font-size: var(--fs-nav);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink);
  padding: var(--sp-2) 0 var(--sp-2) var(--sp-5);
  margin-left: var(--sp-2);
  border-left: 1px solid var(--rule);
  transition: color var(--dur-ui) ease;
}
.index-toggle__bracket{ color: var(--ink-faint); transition: color var(--dur-ui) ease; }
.index-toggle:hover,
.index-toggle:focus-visible,
.index-toggle[aria-pressed="true"]{ color: var(--accent); }
.index-toggle:hover .index-toggle__bracket,
.index-toggle:focus-visible .index-toggle__bracket,
.index-toggle[aria-pressed="true"] .index-toggle__bracket{ color: var(--accent); }

.mobile-menu{ display: block; }
@media (min-width: 860px){
  .mobile-menu{ display: none; }
}
.mobile-menu summary{
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-nav);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--sp-3) 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.mobile-menu summary::-webkit-details-marker{ display: none; }
.mobile-menu summary::after{ content: " +"; }
.mobile-menu[open] summary::after{ content: " –"; }
.mobile-menu__panel{
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-4) 0 var(--sp-2);
}
.mobile-menu__panel a{
  text-decoration: none;
  font-size: 1.0625rem;
  padding: var(--sp-3) 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.mobile-menu .index-toggle{ border-left: none; padding-left: 0; padding-top: var(--sp-3); padding-bottom: var(--sp-3); min-height: 44px; display: flex; align-items: center; text-align: left; }

/* ============================================================
   Frame — shared image treatment (masonry + hero + filmstrip)
   ============================================================ */
.frame{
  display: block;
  cursor: pointer;
  border: none;
  background: none;
  margin: 0;
  padding: 0;
  text-align: left;
  font: inherit;
  color: inherit;
}
.frame__crop{
  position: relative;
  overflow: hidden;
  background: var(--paper-dim);
  display: block;
}
.frame__crop img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.18) brightness(1.03);
  transform: scale(1);
  transition: transform var(--dur-breathe) var(--ease-breathe);
  will-change: transform;
}
.frame__wash{
  position: absolute;
  inset: 0;
  background: var(--accent);
  mix-blend-mode: color;
  opacity: 0;
  transition: opacity var(--dur-breathe) ease;
  pointer-events: none;
}
.frame:hover .frame__crop img,
.frame:focus-visible .frame__crop img{ transform: scale(1.055); }
.frame:hover .frame__wash,
.frame:focus-visible .frame__wash{ opacity: 0.62; }
.frame:focus-visible{ outline: 2px solid var(--accent); outline-offset: 4px; }

.frame__cap{
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-2);
  font-size: var(--fs-caption);
}
.frame__place{ font-weight: 600; }
.frame__meta{ color: var(--ink-faint); text-align: right; }

@media (prefers-reduced-motion: reduce){
  .frame__crop img,
  .frame__wash,
  .lightbox,
  .lightbox.is-open,
  .filmstrip,
  .filmstrip.is-open{ transition-duration: 1ms; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6) var(--sp-8);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--sp-5);
  align-items: start;
}
.hero__text{
  grid-column: 1 / span 12;
}
.hero__eyebrow{
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin: 0 0 var(--sp-4);
}
.hero__headline{
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--fs-h1);
  line-height: 1.04;
  margin: 0 0 var(--sp-6);
  max-width: 16ch;
}
.hero__headline em{ color: var(--accent); }
.hero__body{
  max-width: 56ch;
  font-size: var(--fs-lead);
  color: var(--ink-soft);
  margin: 0 0 var(--sp-4);
}
.hero__hint{
  font-size: var(--fs-caption);
  color: var(--ink-faint);
  max-width: 46ch;
}
.kbd{
  font-family: var(--sans);
  font-weight: 600;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.05em 0.4em;
}

.hero__frame{
  grid-column: 3 / span 10;
  margin-top: var(--sp-6);
}
@media (min-width: 900px){
  .hero__text{ grid-column: 1 / span 5; grid-row: 1; }
  .hero__frame{
    grid-column: 7 / span 6;
    grid-row: 1;
    margin-top: 4.5rem;
  }
}
.frame--hero .frame__crop{ aspect-ratio: 1400 / 1000; }
.frame--hero .frame__cap{ padding-top: var(--sp-3); font-size: var(--fs-caption); }

/* ============================================================
   Series / masonry
   ============================================================ */
.series{
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6) var(--sp-7);
}
.series__head{
  max-width: 62ch;
  margin: 0 0 var(--sp-7);
}
.series__head--right{
  margin-left: auto;
  text-align: right;
}
.series__title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--fs-h2);
  margin: 0 0 var(--sp-3);
}
.series__note{
  color: var(--ink-soft);
  font-size: var(--fs-body);
  margin: 0;
}

.masonry{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--sp-7) var(--sp-5);
  grid-auto-flow: dense;
}

/* Entrance reveal on scroll — opacity lives on the figure, the rise lives on
   frame__crop (not on .frame itself), since the parallax script below drives
   its own translateY on .frame and the two must not fight over one property. */
.masonry > .frame{
  min-width: 0;
  opacity: 0;
  transition: opacity 700ms var(--ease-breathe);
}
.masonry > .frame.frame--in{ opacity: 1; }
.masonry > .frame .frame__crop{
  transform: translateY(28px);
  transition: transform 700ms var(--ease-breathe);
}
.masonry > .frame.frame--in .frame__crop{ transform: translateY(0); }
@media (prefers-reduced-motion: reduce){
  .masonry > .frame,
  .masonry > .frame .frame__crop{ opacity: 1; transform: none; transition: none; }
}
/* vertical offsets are art-directed per plate — see PLATES[].offset in app.js,
   applied inline so each frame gets a deliberate, collision-free stagger. */

@media (max-width: 720px){
  .masonry{ grid-template-columns: 1fr; gap: var(--sp-7); }
  .masonry > .frame{ grid-column: 1 / -1 !important; margin-top: 0 !important; }
}

@media (max-width: 720px){
  .hero{ padding-top: var(--sp-7); padding-bottom: var(--sp-6); }
  .series{ padding-top: var(--sp-7); padding-bottom: var(--sp-6); }
  .series__head{ margin-bottom: var(--sp-6); }
  .about, .prints{ padding-top: var(--sp-7); padding-bottom: var(--sp-7); }
  .contact{ padding-top: var(--sp-7); padding-bottom: var(--sp-8); }
  .frame__cap{ flex-direction: column; gap: var(--sp-1); }
  .frame__meta{ text-align: left; }
}

/* ============================================================
   About
   ============================================================ */
.about{
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-9) var(--sp-6);
}
.about__inner{ max-width: 1200px; margin: 0 auto; }
.about__eyebrow{
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(250,250,248,0.55);
  margin: 0 0 var(--sp-3);
}
.about__title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--fs-h2);
  margin: 0 0 var(--sp-7);
}
.about__title em{ color: #7C90F0; }
.about__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-7);
}
@media (min-width: 900px){
  .about__grid{ grid-template-columns: 1.6fr 1fr; }
}
.about__lead p{
  max-width: 68ch;
  color: rgba(250,250,248,0.82);
  margin: 0 0 var(--sp-5);
}
.about__facts{
  margin: 0;
  border-top: 1px solid rgba(250,250,248,0.2);
}
.about__facts > div{
  display: flex;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid rgba(250,250,248,0.2);
}
.about__facts dt{
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(250,250,248,0.55);
}
.about__facts dd{
  margin: 0;
  text-align: right;
  max-width: 22ch;
}

/* ============================================================
   Prints
   ============================================================ */
.prints{
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6);
}
.prints__head{ max-width: 62ch; margin-bottom: var(--sp-7); }
.prints__eyebrow{
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin: 0 0 var(--sp-3);
}
.prints__title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--fs-h2);
  margin: 0 0 var(--sp-4);
}
.prints__note{ color: var(--ink-soft); margin: 0; }
.prints__note a{
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: color var(--dur-ui) ease;
}
.prints__note a:hover,
.prints__note a:focus-visible{ color: var(--accent); text-decoration-color: var(--accent); }

.prints__list{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.prints__list li{
  display: grid;
  grid-template-columns: 4.5rem 1fr auto auto;
  align-items: baseline;
  gap: var(--sp-4);
  padding: var(--sp-5) 0;
  border-bottom: 1px solid var(--rule);
}
.prints__plate{
  font-size: var(--fs-caption);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.prints__name{ font-weight: 600; }
.prints__spec{ font-size: var(--fs-caption); color: var(--ink-soft); }
.prints__price{
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  text-align: right;
}
@media (max-width: 640px){
  .prints__list li{
    grid-template-columns: 1fr auto;
    row-gap: var(--sp-1);
  }
  .prints__plate{ order: -1; }
  .prints__price{ text-align: left; }
}

/* ============================================================
   Contact
   ============================================================ */
.contact{
  padding: var(--sp-9) var(--sp-6) var(--sp-10);
}
.contact__inner{ max-width: 1200px; margin: 0 auto; }
.contact__title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--fs-h2);
  margin: 0 0 var(--sp-8);
}
.contact__title em{ color: var(--accent); }
.contact__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}
@media (min-width: 720px){
  .contact__grid{ grid-template-columns: repeat(3, 1fr); }
}
.contact__label{
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin: 0 0 var(--sp-3);
}
.contact__block p{ margin: 0 0 var(--sp-4); }
.contact__block a{
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: color var(--dur-ui) ease;
}
.contact__block a:hover,
.contact__block a:focus-visible{ color: var(--accent); text-decoration-color: var(--accent); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer{
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--sp-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  border-top: 1px solid var(--rule);
  font-size: var(--fs-caption);
  color: var(--ink-faint);
}
.back-to-top{
  background: none;
  border: none;
  font-family: var(--sans);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  cursor: pointer;
  padding: var(--sp-2);
  transition: color var(--dur-ui) ease;
}
.back-to-top:hover,
.back-to-top:focus-visible{ color: var(--accent); }

/* ============================================================
   Filmstrip index view
   ============================================================ */
.filmstrip{
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-ui) ease, visibility 0s linear var(--dur-ui);
}
.filmstrip[hidden]{ display: none; }
.filmstrip.is-open{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity var(--dur-ui) ease;
}
.filmstrip__head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--rule);
}
.filmstrip__title{
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.375rem;
  margin: 0;
}
.filmstrip__close{
  background: none;
  border: 1px solid var(--rule);
  border-radius: 3px;
  font-family: var(--sans);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--sp-2) var(--sp-4);
  cursor: pointer;
  transition: color var(--dur-ui) ease, border-color var(--dur-ui) ease;
}
.filmstrip__close:hover,
.filmstrip__close:focus-visible{ color: var(--accent); border-color: var(--accent); }

.filmstrip__track{
  flex: 1;
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-6);
  overflow-x: auto;
  overflow-y: hidden;
  align-items: center;
  background:
    repeating-linear-gradient(180deg, transparent 0 4px, transparent 4px) ,
    var(--paper);
  scrollbar-width: thin;
}
.filmstrip__cell{
  flex: 0 0 auto;
  width: 200px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: inherit;
  text-align: left;
}
.filmstrip__cell .frame__crop{
  aspect-ratio: 4 / 5;
  border: 1px solid var(--rule);
}
.filmstrip__cell .frame__crop img{
  filter: grayscale(1) contrast(1.18) brightness(1.03);
}
.filmstrip__num{
  display: block;
  font-size: var(--fs-caption);
  color: var(--ink-faint);
  padding-top: var(--sp-2);
  font-variant-numeric: tabular-nums;
}
.filmstrip__cell:hover .frame__crop img,
.filmstrip__cell:focus-visible .frame__crop img{ transform: scale(1.055); }
.filmstrip__cell:hover .frame__wash,
.filmstrip__cell:focus-visible .frame__wash{ opacity: 0.62; }
.filmstrip__cell:focus-visible{ outline: 2px solid var(--accent); outline-offset: 4px; }

/* ============================================================
   Lightbox
   ============================================================ */
.lightbox{
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(17,17,17,0.96);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-ui) ease, visibility 0s linear var(--dur-ui);
}
.lightbox[hidden]{ display: none; }
.lightbox.is-open{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity var(--dur-ui) ease;
}
.lightbox__figure{
  margin: 0;
  max-width: min(92vw, 1200px);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}
.lightbox__figure img{
  max-width: 100%;
  max-height: 74vh;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(1) contrast(1.18) brightness(1.03);
}
.lightbox__figure figcaption{
  display: flex;
  gap: var(--sp-3);
  font-size: var(--fs-caption);
  color: rgba(250,250,248,0.75);
}
.lightbox__figure figcaption span:first-child{ font-weight: 600; color: var(--paper); }
.lightbox__close,
.lightbox__nav{
  position: absolute;
  background: none;
  border: none;
  color: var(--paper);
  cursor: pointer;
  font-family: var(--sans);
  transition: color var(--dur-ui) ease;
}
.lightbox__close{
  top: var(--sp-5);
  right: var(--sp-6);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.lightbox__close:hover,
.lightbox__close:focus-visible{ color: var(--accent); }
.lightbox__nav{
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  line-height: 1;
  padding: var(--sp-4);
}
.lightbox__nav--prev{ left: var(--sp-2); }
.lightbox__nav--next{ right: var(--sp-2); }
.lightbox__nav:hover,
.lightbox__nav:focus-visible{ color: var(--accent); }
.lightbox__counter{
  position: absolute;
  bottom: var(--sp-5);
  left: var(--sp-6);
  font-size: var(--fs-caption);
  color: rgba(250,250,248,0.6);
  font-variant-numeric: tabular-nums;
  margin: 0;
}
@media (max-width: 640px){
  .lightbox__nav{ font-size: 2rem; padding: var(--sp-2); }
  .lightbox__close{ top: var(--sp-3); right: var(--sp-4); }
  .lightbox__counter{ left: var(--sp-4); bottom: var(--sp-3); }
}

/* ============================================================
   Grain — a faint film-grain field over the whole page, since
   every plate here is supposedly drum-scanned from real stock.
   Purely decorative, static (no motion), so it needs no
   reduced-motion guard.
   ============================================================ */
.grain{
  position: fixed;
  inset: 0;
  z-index: 500;
  pointer-events: none;
  opacity: 0.15;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.1' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.22 0.22 0.22 0 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 140px 140px;
}