/* ==========================================================================
   Foto-Portfolio – eleganter Minimalismus
   Monochromes Interface: alle Farbe kommt aus den Fotos.
   ========================================================================== */

/* ---- Schriften (lokal eingebunden, keine Verbindung zu Google) ---------- */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/manrope-latin-600-normal.woff2") format("woff2");
}

:root {
  --paper:      #fdfdfc;   /* Hintergrund, fast weiß */
  --ink:        #141414;   /* Text */
  --muted:      #7a7a78;   /* Nebentext, Labels */
  --faint:      #9d9d9a;
  --hairline:   #e7e6e2;   /* Haarlinien statt Rahmen */
  --backdrop:   #0b0b0b;   /* Lightbox-Hintergrund */

  --measure:    72rem;     /* maximale Inhaltsbreite */
  --gutter:     clamp(1.25rem, 4vw, 3.25rem);
  --gap:        10px;      /* Abstand zwischen Fotos */

  --track:      0.18em;    /* Laufweite für Versal-Labels */
}

/* ---- Reset / Grundlagen -------------------------------------------------- */

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* Utility: getrackte Versal-Labels (Navigation, Meta) */
.label {
  font-size: 0.72rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

/* Serifen-Signatur nur für Titel */
.serif {
  font-family: "Manrope", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.005em;
  line-height: 1.05;
}

/* ---- Kopf --------------------------------------------------------------- */

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  flex-wrap: wrap;
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(1.6rem, 4vw, 2.8rem) var(--gutter) clamp(1.4rem, 3vw, 2rem);
}

.wordmark {
  font-family: "Manrope", system-ui, sans-serif;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: baseline;
  gap: clamp(1rem, 2.2vw, 1.9rem);
  flex-wrap: wrap;
}

.nav a {
  font-size: 0.74rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .25s ease, border-color .25s ease;
}

.nav a:hover,
.nav a:focus-visible { color: var(--ink); }

.nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ---- Hauptbereich ------------------------------------------------------- */

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(4rem, 10vw, 8rem);
  min-height: 60vh;
}

.view { animation: viewIn .5s ease both; }

@keyframes viewIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Seitenkopf innerhalb einer Ansicht (Titel + Beschreibung) */
.page-head {
  padding: clamp(1rem, 4vw, 3rem) 0 clamp(1.6rem, 4vw, 2.6rem);
  max-width: 46rem;
}

.page-head .intro-line {
  margin: 0 0 1.1rem;
}

.page-head h1 {
  margin: 0;
  font-family: "Manrope", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
}

.page-head .desc {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  max-width: 34rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.4rem;
  font-size: 0.72rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--muted);
  transition: color .25s ease;
}
.back-link:hover { color: var(--ink); }
.back-link::before { content: "\2190"; margin-right: 0.55em; }

/* ---- Startseite: Sammlungs-Übersicht ------------------------------------ */

.collections {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.4rem, 3.2vw, 2.75rem) clamp(1.4rem, 3vw, 2.5rem);
}

@media (max-width: 620px) {
  .collections { grid-template-columns: 1fr; }
}

.collection-card { display: block; }

.collection-card .frame {
  overflow: hidden;
  background: #f0efec;
  aspect-ratio: 4 / 3;
}

.collection-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.0);
  transition: transform 1.1s cubic-bezier(.2,.7,.2,1), opacity .8s ease;
  opacity: 0;
}
.collection-card img.loaded { opacity: 1; }

.collection-card:hover img,
.collection-card:focus-visible img { transform: scale(1.04); }

.collection-card .meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--hairline);
}

.collection-card .name {
  font-family: "Manrope", system-ui, sans-serif;
  font-size: 1.6rem;
  line-height: 1.1;
}

.collection-card .count {
  font-size: 0.7rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}

/* ---- Justified-Galerie -------------------------------------------------- */

.gallery { width: 100%; }

.grow-row { display: flex; }

.tile {
  position: relative;
  overflow: hidden;
  background: #f0efec;
  cursor: pointer;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: translateY(8px);
}

.tile img.loaded {
  opacity: 1;
  transform: none;
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}

.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.tile:hover::after { opacity: 0.06; }

/* ---- Diptychon (Gegenüberstellung) -------------------------------------- */

.diptychs {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 8vw, 7rem);   /* Abstand zwischen den Bildpaaren */
}

.diptych {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  align-items: center;
}

/* Ungerade Anzahl: letztes Bild allein und mittig */
.diptych.is-single {
  grid-template-columns: minmax(0, 66%);
  justify-content: center;
}

.dip-fig {
  margin: 0;
  position: relative;
  cursor: pointer;
}

.dip-fig img {
  width: 100%;
  height: auto;
  background: #f0efec;
  opacity: 0;
  transform: translateY(8px);
}
.dip-fig img.loaded {
  opacity: 1;
  transform: none;
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}

.dip-fig::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.dip-fig:hover::after { opacity: 0.06; }

.dip-cap {
  margin-top: 0.7rem;
  font-size: 0.7rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--faint);
}

/* Auf schmalen Screens untereinander stapeln */
@media (max-width: 620px) {
  .diptych { grid-template-columns: 1fr; gap: 0.9rem; }
  .diptych.is-single { grid-template-columns: 1fr; }
  .diptychs { gap: clamp(2.5rem, 10vw, 4rem); }
}

/* ---- Über-Seite --------------------------------------------------------- */

.about {
  max-width: 34rem;
  padding-top: clamp(1rem, 4vw, 2rem);
}
.about h1 {
  font-family: "Manrope", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0 0 1.4rem;
}
.about p {
  color: #333;
  margin: 0 0 1.1rem;
}

/* ---- Fußzeile ----------------------------------------------------------- */

.site-footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 3rem;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer span { font-size: 0.7rem; letter-spacing: var(--track); text-transform: uppercase; color: var(--faint); }

.footer-links {
  display: inline-flex;
  gap: 1.4rem;
  align-items: baseline;
}
.footer-links a {
  font-size: 0.7rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--muted);
  transition: color .25s ease;
}
.footer-links a:hover { color: var(--ink); }

/* ---- Impressum / Rechtstext --------------------------------------------- */

.legal {
  max-width: 42rem;
  padding-top: clamp(1rem, 4vw, 2rem);
}
.legal h1 {
  font-family: "Manrope", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0 0 1.8rem;
}
.legal h2 {
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--muted);
  font-weight: 500;
  margin: 2rem 0 0.55rem;
}
.legal p {
  margin: 0 0 0.5rem;
  color: #333;
}
.legal a { color: #333; text-decoration: underline; text-underline-offset: 2px; }
.legal a:hover { color: var(--ink); }
.legal .fine {
  margin-top: 2.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.9rem;
  color: var(--muted);
}
.legal .fine p { color: var(--muted); }

/* ---- Lightbox ----------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }

.lightbox figure {
  margin: 0;
  max-width: 92vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox img {
  max-width: 92vw;
  max-height: 80vh;
  object-fit: contain;
  opacity: 0;
  transition: opacity .35s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}
.lightbox img.ready { opacity: 1; }

.lightbox figcaption {
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: #cfceca;
}
.lightbox .caption-text { font-size: 0.9rem; color: #e8e7e3; }
.lightbox .counter {
  font-size: 0.7rem;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: #8f8e8a;
}

.lb-btn {
  position: absolute;
  top: 0; bottom: 0;
  width: 22%;
  min-width: 60px;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  opacity: 0.55;
  transition: opacity .25s ease;
  font-size: 1.6rem;
  z-index: 1;
}
.lb-btn:hover { opacity: 1; }
.lb-prev { left: 0; justify-content: flex-start; padding-left: clamp(1rem,3vw,2.5rem); }
.lb-next { right: 0; justify-content: flex-end; padding-right: clamp(1rem,3vw,2.5rem); }

.lb-close {
  position: absolute;
  top: clamp(1rem, 3vw, 1.75rem);
  right: clamp(1rem, 3vw, 1.75rem);
  z-index: 2;
  width: 44px; height: 44px;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity .25s ease;
  line-height: 1;
}
.lb-close:hover { opacity: 1; }

/* ---- Zugänglichkeit / Fokus --------------------------------------------- */

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
.lightbox :focus-visible { outline-color: #fff; }

/* ---- Bewegung reduzieren ------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .tile img { transform: none; }
}