/* ───────────────────────────────────────────────────────────────
   Klaus Peter Schlange — reduziertes Galerie-System
   Eine Schrift (Inter), Galerie-Weiß, Werke tragen die Farbe.
   ─────────────────────────────────────────────────────────────── */
:root {
  --bg:       #ffffff;
  --surface:  #f6f5f3;
  --fg:       #141414;
  --muted:    #6e6e6a;
  --border:   #e5e4e0;
  --accent:   #a23616;
  --on-dark:  #ffffff;   /* text/marks over photography */
  --ink-deep: #0b0b0b;   /* photographic scrims & lightbox */

  --fg-soft:   color-mix(in oklch, var(--fg) 7%, transparent);
  --scrim:     color-mix(in oklch, var(--ink-deep) 62%, transparent);

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  --fs-display: clamp(40px, 8vw, 104px);
  --fs-h1:      clamp(32px, 4.6vw, 62px);
  --fs-h2:      clamp(26px, 3vw, 40px);
  --fs-h3:      clamp(18px, 1.5vw, 22px);
  --fs-lead:    clamp(18px, 1.5vw, 22px);
  --fs-body:    16.5px;
  --fs-meta:    12px;

  --gutter: clamp(20px, 5vw, 64px);
  --container: 1280px;
  --measure: 66ch;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.62;
  font-feature-settings: "ss01","cv05";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; color: inherit; background: none; border: 0; }
p { text-wrap: pretty; }
h1,h2,h3,h4 { text-wrap: balance; font-weight: 500; margin: 0; }
::selection { background: var(--fg); color: var(--bg); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ─── layout primitives ─────────────────────────────── */
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.wide      { max-width: 1600px; }
.section   { padding-block: clamp(56px, 9vw, 128px); }
.rule      { border: 0; border-top: 1px solid var(--border); margin: 0; }
.measure   { max-width: var(--measure); }

/* ─── type helpers ──────────────────────────────────── */
.display {
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: .98;
  letter-spacing: -.035em;
}
.h1 { font-size: var(--fs-h1); font-weight: 400; line-height: 1.04; letter-spacing: -.025em; }
.h2 { font-size: var(--fs-h2); font-weight: 400; line-height: 1.12; letter-spacing: -.02em; }
.h3 { font-size: var(--fs-h3); font-weight: 500; line-height: 1.3; letter-spacing: -.01em; }
.lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--muted); letter-spacing: -.01em; }
.eyebrow {
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.eyebrow--accent { color: var(--accent); }
.meta {
  font-size: var(--fs-meta);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.prose p { max-width: var(--measure); margin: 0 0 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose .h2 { margin: 1.6em 0 .5em; }
.prose .h2:first-child { margin-top: 0; }

/* ─── links ─────────────────────────────────────────── */
.link {
  display: inline-flex; align-items: center; gap: .5em;
  letter-spacing: .02em;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--border);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.link:hover { border-color: var(--fg); }
.link--accent:hover { color: var(--accent); border-color: var(--accent); }
.link .arrow { transition: transform .3s var(--ease); }
.link:hover .arrow { transform: translateX(4px); }

.btn {
  display: inline-flex; align-items: center; gap: .6em;
  padding: 14px 26px;
  border: 1px solid var(--fg);
  font-size: 14px; font-weight: 500; letter-spacing: .02em;
  border-radius: 999px;
  transition: background .25s var(--ease), color .25s var(--ease), transform .08s var(--ease);
}
.btn:hover { background: var(--fg); color: var(--bg); }
.btn:active { transform: translateY(1px); }
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ─── top nav ───────────────────────────────────────── */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}
.topnav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding-block: 20px;
}
.wordmark {
  font-size: 13px; font-weight: 600;
  letter-spacing: .28em; text-transform: uppercase;
  white-space: nowrap;
}
.wordmark .thin { font-weight: 300; }
.nav-links { display: flex; gap: clamp(20px, 2.4vw, 40px); align-items: center; }
.nav-links a {
  font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
  position: relative; padding: 6px 4px;
  transition: color .25s var(--ease);
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active { color: var(--fg); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 4px; right: 4px; bottom: 2px;
  height: 1px; background: var(--accent);
}
.nav-toggle { display: none; }

/* transparent-over-hero variant (Startseite) */
.topnav--over {
  position: fixed; left: 0; right: 0;
  background: transparent; border-color: transparent; color: var(--on-dark);
}
.topnav--over .wordmark { color: var(--on-dark); }
.topnav--over .nav-links a { color: color-mix(in oklch, var(--on-dark) 78%, transparent); }
.topnav--over .nav-links a:hover,
.topnav--over .nav-links a.active { color: var(--on-dark); }
.topnav--over.scrolled {
  position: fixed;
  background: color-mix(in oklch, var(--bg) 90%, transparent);
  backdrop-filter: blur(14px);
  border-color: var(--border);
  color: var(--fg);
}
.topnav--over.scrolled .wordmark { color: var(--fg); }
.topnav--over.scrolled .nav-links a { color: var(--muted); }
.topnav--over.scrolled .nav-links a:hover,
.topnav--over.scrolled .nav-links a.active { color: var(--fg); }

/* ─── home hero (full-bleed werk) ───────────────────── */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: flex-end;
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,
    color-mix(in oklch,var(--ink-deep) 50%, transparent) 0%,
    color-mix(in oklch,var(--ink-deep) 16%, transparent) 15%,
    transparent 34%,
    transparent 50%,
    color-mix(in oklch,var(--ink-deep) 74%, transparent) 100%);
}
.hero__inner { position: relative; z-index: 2; width: 100%; color: var(--on-dark); padding-bottom: clamp(48px, 8vw, 96px); padding-top: 140px; }
.hero__eyebrow { color: color-mix(in oklch,var(--on-dark) 80%, transparent); margin-bottom: 26px; }
.hero__title { color: var(--on-dark); max-width: 14ch; }
.hero__sub {
  margin-top: 28px; max-width: 46ch; color: color-mix(in oklch,var(--on-dark) 86%, transparent);
  font-size: var(--fs-lead); line-height: 1.5; letter-spacing: -.01em;
}
.hero__actions { margin-top: 40px; display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.hero .btn { border-color: color-mix(in oklch,var(--on-dark) 55%, transparent); color: var(--on-dark); }
.hero .btn:hover { background: var(--on-dark); color: var(--fg); border-color: var(--on-dark); }
.hero__scrollcue {
  position: absolute; z-index: 2; right: var(--gutter); bottom: clamp(48px,8vw,96px);
  color: color-mix(in oklch,var(--on-dark) 70%, transparent);
  font-size: var(--fs-meta); letter-spacing: .2em; text-transform: uppercase;
  writing-mode: vertical-rl;
}

/* ─── page hero (inner pages) ───────────────────────── */
.pagehead { padding-top: clamp(72px, 11vw, 150px); padding-bottom: clamp(36px, 5vw, 64px); }
.pagehead .eyebrow { margin-bottom: 22px; }
.pagehead .display, .pagehead .h1 { max-width: 16ch; }
.pagehead .lead { margin-top: 28px; max-width: 52ch; }

/* ─── series index (werke.html) ─────────────────────── */
.series-list { display: flex; flex-direction: column; }
.series-item {
  display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(24px,5vw,80px);
  align-items: center; padding-block: clamp(40px,6vw,88px);
  border-top: 1px solid var(--border);
}
.series-item:last-child { border-bottom: 1px solid var(--border); }
.series-item__media { position: relative; overflow: hidden; background: var(--surface); aspect-ratio: 4/3; }
.series-item__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.series-item:hover .series-item__media img { transform: scale(1.045); }
.series-item__index { font-size: var(--fs-meta); letter-spacing: .18em; color: var(--accent); }
.series-item__title { margin: 18px 0 16px; font-size: clamp(28px,3.4vw,48px); font-weight: 300; letter-spacing: -.025em; line-height: 1.02; }
.series-item__desc { color: var(--muted); max-width: 46ch; margin-bottom: 26px; }
.series-item__count { margin-left: auto; }
.series-item:nth-child(even) .series-item__media { order: -1; }
@media (max-width: 860px) {
  .series-item { grid-template-columns: 1fr; gap: 24px; }
  .series-item:nth-child(even) .series-item__media { order: 0; }
  .series-item__media { aspect-ratio: 16/10; }
}

/* ─── featured strip (startseite) ───────────────────── */
.feat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: clamp(14px,1.6vw,24px); }
.feat-tile { position: relative; overflow: hidden; background: var(--surface); aspect-ratio: 3/4; display: block; }
.feat-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.feat-tile:hover img { transform: scale(1.05); }
.feat-tile__label {
  position: absolute; left: 16px; bottom: 14px; z-index: 2;
  color: var(--on-dark); font-size: var(--fs-meta); letter-spacing: .14em; text-transform: uppercase;
  text-shadow: 0 1px 10px rgba(0,0,0,.5);
}
.feat-tile::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in oklch,var(--ink-deep) 55%, transparent));
  opacity: .9;
}
@media (max-width: 760px) { .feat-grid { grid-template-columns: 1fr 1fr; } }

/* ─── gallery (masonry) ─────────────────────────────── */
.gallery { columns: 3; column-gap: clamp(14px,1.6vw,26px); }
.gallery figure { break-inside: avoid; margin: 0 0 clamp(14px,1.6vw,26px); }
.work {
  position: relative; display: block; width: 100%;
  background: var(--surface); overflow: hidden; cursor: zoom-in;
}
.work img { width: 100%; height: auto; transition: transform 1.1s var(--ease), opacity .8s var(--ease); }
.work:hover img { transform: scale(1.04); }
.work::after {
  content: ""; position: absolute; inset: 0;
  background: color-mix(in oklch,var(--ink-deep) 0%, transparent);
  transition: background .3s var(--ease);
}
.work:hover::after { background: color-mix(in oklch,var(--ink-deep) 7%, transparent); }
.work__plus {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  width: 32px; height: 32px; border-radius: 999px;
  display: grid; place-items: center;
  background: color-mix(in oklch,var(--on-dark) 90%, transparent); color: var(--fg);
  opacity: 0; transform: scale(.85); transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.work:hover .work__plus { opacity: 1; transform: scale(1); }
@media (max-width: 900px) { .gallery { columns: 2; } }
@media (max-width: 560px) { .gallery { columns: 1; } }

/* ─── lightbox ──────────────────────────────────────── */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: color-mix(in oklch,var(--ink-deep) 97%, transparent);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity .35s var(--ease), visibility .35s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox__stage {
  position: relative; max-width: 92vw; max-height: 86vh;
  display: flex; align-items: center; justify-content: center;
  transform: scale(.985); transition: transform .35s var(--ease);
}
.lightbox.open .lightbox__stage { transform: scale(1); }
.lightbox__img { max-width: 92vw; max-height: 86vh; width: auto; height: auto; object-fit: contain; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.lightbox__cap {
  position: fixed; left: 0; right: 0; bottom: 26px; z-index: 2;
  display: flex; gap: 18px; justify-content: center; align-items: baseline;
  color: color-mix(in oklch,var(--on-dark) 90%, transparent);
  font-size: var(--fs-meta); letter-spacing: .14em; text-transform: uppercase;
  padding-inline: 20px; text-align: center; flex-wrap: wrap;
}
.lightbox__cap .t { color: var(--on-dark); font-weight: 500; letter-spacing: .06em; text-transform: none; font-size: 14px; }
.lightbox__cap .count { font-variant-numeric: tabular-nums; }
.lb-btn {
  position: fixed; z-index: 3; color: var(--on-dark);
  width: 54px; height: 54px; border-radius: 999px;
  display: grid; place-items: center;
  background: color-mix(in oklch,var(--on-dark) 10%, transparent);
  transition: background .25s var(--ease), transform .25s var(--ease);
}
.lb-btn:hover { background: color-mix(in oklch,var(--on-dark) 22%, transparent); }
.lb-btn svg { width: 22px; height: 22px; }
.lb-close { top: 22px; right: 22px; }
.lb-prev { left: clamp(10px,3vw,34px); top: 50%; transform: translateY(-50%); }
.lb-next { right: clamp(10px,3vw,34px); top: 50%; transform: translateY(-50%); }
.lb-prev:hover { transform: translateY(-50%) translateX(-3px); }
.lb-next:hover { transform: translateY(-50%) translateX(3px); }
body.lb-lock { overflow: hidden; }
@media (max-width: 640px) {
  .lb-prev { left: 10px; } .lb-next { right: 10px; }
  .lb-btn { width: 46px; height: 46px; }
}

/* ─── timeline (Lebenslauf) ─────────────────────────── */
.cv { display: flex; flex-direction: column; }
.cv-row {
  display: grid; grid-template-columns: 140px 1fr; gap: clamp(16px,3vw,48px);
  padding-block: 22px; border-top: 1px solid var(--border); align-items: baseline;
}
.cv-row:last-child { border-bottom: 1px solid var(--border); }
.cv-year { font-size: 14px; letter-spacing: .04em; color: var(--accent); font-variant-numeric: tabular-nums; font-weight: 500; }
.cv-desc { color: var(--fg); max-width: 62ch; }
@media (max-width: 620px) { .cv-row { grid-template-columns: 1fr; gap: 4px; } }

/* ─── two-column split ──────────────────────────────── */
.split { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(28px,6vw,96px); align-items: start; }
.split--even { grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .split, .split--even { grid-template-columns: 1fr; gap: 28px; } }
.sticky { position: sticky; top: 110px; }
@media (max-width: 860px) { .sticky { position: static; } }

/* ─── pull quote ────────────────────────────────────── */
.pull {
  font-size: clamp(24px,3.2vw,44px); font-weight: 300; line-height: 1.18;
  letter-spacing: -.025em; max-width: 24ch;
}
.pull--center { max-width: 20ch; margin-inline: auto; text-align: center; }

/* ─── contact form ──────────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 22px; max-width: 460px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: var(--fs-meta); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 2px; font: inherit; font-size: 16px; color: var(--fg);
  background: transparent; border: 0; border-bottom: 1px solid var(--border);
  transition: border-color .25s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--fg); }
.field textarea { resize: vertical; min-height: 96px; line-height: 1.5; }

/* ─── footer ────────────────────────────────────────── */
.pagefoot { border-top: 1px solid var(--border); padding-block: clamp(48px,7vw,88px); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.foot-grid h4 { font-size: var(--fs-meta); letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; font-weight: 500; }
.foot-links { display: flex; flex-direction: column; gap: 8px; }
.foot-links a { color: var(--fg); font-size: 15px; width: fit-content; padding: 2px 0; border-bottom: 1px solid transparent; transition: border-color .25s var(--ease); }
.foot-links a:hover { border-color: var(--fg); }
.foot-word { font-size: clamp(26px,3vw,40px); font-weight: 300; letter-spacing: -.03em; line-height: 1.05; }
.foot-base { margin-top: clamp(40px,6vw,72px); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-grid > *:first-child { grid-column: 1 / -1; } }

/* ─── series sub-nav (prev/next between series) ─────── */
.serienav { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--border); }
.serienav a { padding-block: clamp(28px,4vw,52px); display: flex; flex-direction: column; gap: 8px; transition: background .25s var(--ease); }
.serienav a:hover { background: var(--surface); }
.serienav a + a { border-left: 1px solid var(--border); align-items: flex-end; text-align: right; }
.serienav .meta { color: var(--muted); }
.serienav .t { font-size: clamp(20px,2.4vw,30px); font-weight: 300; letter-spacing: -.02em; }
@media (max-width:620px){ .serienav { grid-template-columns:1fr; } .serienav a + a { border-left:0; border-top:1px solid var(--border); align-items:flex-start; text-align:left; } }

/* ─── scroll reveal ─────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .work img, .series-item__media img, .feat-tile img { transition: none; }
}

/* ─── mobile nav ────────────────────────────────────── */
@media (max-width: 720px) {
  .nav-toggle { display: inline-grid; place-items: center; width: 40px; height: 40px; }
  .nav-toggle svg { width: 22px; height: 22px; }
  .nav-links {
    position: fixed; inset: 0; z-index: 60;
    flex-direction: column; justify-content: center; align-items: center; gap: 28px;
    background: var(--bg);
    transform: translateY(-100%); transition: transform .4s var(--ease);
  }
  .nav-links.open { transform: none; }
  .nav-links a,
  .topnav--over .nav-links a,
  .topnav--over.scrolled .nav-links a { font-size: 20px; color: var(--fg); letter-spacing: .08em; }
  .nav-links a.active { color: var(--accent); }
  .nav-close { position: fixed; top: 18px; right: var(--gutter); z-index: 61; display: inline-grid; color: var(--fg); }
}
@media (min-width: 721px) { .nav-close { display: none; } }