/* ==========================================================================
   Matthias Wührer — Portfolio
   Design: minimalistisch, viel Weißraum, Kunst im Mittelpunkt.
   Farbakzente dezent aus der Palette der Gemälde abgeleitet.
   ========================================================================== */

/* Schriften lokal eingebunden — keine Verbindung zu Google (DSGVO). */
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("../assets/fonts/fraunces.woff2") format("woff2");
}

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

:root {
  --bg: #fdfcfa;
  --surface: #f5f2ec;
  --ink: #1c1b19;
  --ink-soft: #55524c;
  --muted: #8a857d;
  --line: #e7e2d9;
  --accent: #b0432c;        /* Zinnoberrot — abgeleitet aus den Gemälden */
  --accent-dark: #8c3423;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --space-5: 7rem;

  --max-width: 72rem;
  --radius: 2px;

  --shadow-soft: 0 20px 60px -25px rgba(28, 27, 25, 0.25);
  --transition: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- Basis ------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p {
  margin: 0 0 var(--space-2);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

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

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* --- Skip-Link (Barrierefreiheit) --------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 1.2rem;
  z-index: 200;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
}

/* --- Header / Navigation ------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253, 252, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 4.5rem;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.brand:hover {
  color: var(--ink);
}

.main-nav ul {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  padding-block: 0.4rem;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--ink);
}

.main-nav a:hover::after,
.main-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 44rem) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    display: none;
    padding: var(--space-2) 0 var(--space-3);
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
  }

  .main-nav a {
    font-size: 1.1rem;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* --- Werke-Band (Laufband unter dem Header) ------------------------------ */

.werk-band {
  overflow: hidden;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  /* Werke faden am linken Rand aus und kommen rechts weich wieder herein. */
  --band-fade: clamp(3rem, 9vw, 9rem);
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    #000 var(--band-fade),
    #000 calc(100% - var(--band-fade)),
    transparent
  );
  mask-image: linear-gradient(
    to right,
    transparent,
    #000 var(--band-fade),
    #000 calc(100% - var(--band-fade)),
    transparent
  );
}

.werk-band-track {
  display: flex;
  width: max-content;
  animation: werk-band-lauf var(--band-dauer, 40s) linear infinite;
}

/* Anhalten, sobald die Maus darüber ist oder ein Bild fokussiert wird. */
.werk-band:hover .werk-band-track,
.werk-band:focus-within .werk-band-track {
  animation-play-state: paused;
}

.werk-band-gruppe {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
  padding: 1.25rem clamp(1rem, 2.5vw, 2rem) 1.25rem 0;
}

.werk-band-gruppe a {
  display: block;
  flex-shrink: 0;
}

.werk-band-gruppe img {
  height: clamp(110px, 16vw, 160px);
  width: auto;
  border-radius: var(--radius);
  box-shadow: 0 10px 30px -12px rgba(28, 27, 25, 0.35);
  transition: transform var(--transition);
}

.werk-band-gruppe a:hover img,
.werk-band-gruppe a:focus-visible img {
  transform: scale(1.04);
}

@keyframes werk-band-lauf {
  to {
    transform: translateX(-50%);
  }
}

/* --- Hero --------------------------------------------------------------- */

.hero {
  padding-block: var(--space-5) var(--space-4);
  text-align: center;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: var(--space-2);
}

.hero p.lead {
  max-width: 38rem;
  margin: var(--space-2) auto 0;
  color: var(--ink-soft);
  font-size: 1.15rem;
}

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

.gallery {
  padding-block: var(--space-3) var(--space-5);
}

.gallery-grid {
  columns: 2;
  column-gap: clamp(1.5rem, 3vw, 3rem);
}

@media (max-width: 44rem) {
  .gallery-grid {
    columns: 1;
  }
}

.artwork {
  break-inside: avoid;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
  scroll-margin-top: 6rem;
}

.artwork figure {
  margin: 0;
}

.artwork-image {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  background: var(--surface);
  cursor: zoom-in;
  border: none;
  padding: 0;
  width: 100%;
  display: block;
}

.artwork-image img {
  width: 100%;
  transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.artwork-image:hover img,
.artwork-image:focus-visible img {
  transform: scale(1.025);
}

.artwork figcaption {
  padding-top: var(--space-2);
}

.artwork h3 {
  margin-bottom: 0.25rem;
}

.artwork .details {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.artwork .description {
  color: var(--ink-soft);
  font-size: 0.98rem;
  margin-bottom: 0.75rem;
}

.artwork .price {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink);
}

.artwork .price.sold {
  color: var(--muted);
}

.artwork .inquiry {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

/* --- Kaufhinweis -------------------------------------------------------- */

.purchase-note {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: var(--space-4);
  text-align: center;
}

.purchase-note p {
  max-width: 42rem;
  margin-inline: auto;
  color: var(--ink-soft);
}

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

.lightbox {
  border: none;
  padding: 0;
  background: transparent;
  max-width: min(92vw, 68rem);
  width: auto;
}

.lightbox::backdrop {
  background: rgba(20, 19, 17, 0.92);
}

.lightbox-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.lightbox img {
  max-height: 78vh;
  width: auto;
  max-width: 100%;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
  color: #e9e5de;
  text-align: center;
  font-size: 0.95rem;
}

.lightbox-caption strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  display: block;
}

.lightbox-close {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.5rem;
}

/* --- Inhaltsseiten (Über / Kontakt) ------------------------------------- */

.page-header {
  padding-block: var(--space-4) var(--space-3);
}

.page-header .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: var(--space-1);
}

.prose {
  max-width: 44rem;
  padding-bottom: var(--space-5);
}

.prose h2 {
  margin-top: var(--space-4);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding-bottom: var(--space-5);
}

@media (max-width: 54rem) {
  .about-layout {
    grid-template-columns: 1fr;
  }
}

.about-portrait img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  width: 100%;
}

.about-einblicke {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.about-einblicke figure {
  margin: 0;
}

.about-einblicke img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  display: block;
}

.about-einblicke figcaption {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

@media (max-width: 34rem) {
  .about-einblicke {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* --- Ausstellungen -------------------------------------------------------- */

.exhibitions {
  display: grid;
  gap: clamp(3rem, 7vw, 5.5rem);
  padding-bottom: var(--space-5);
}

.exhibition {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}

@media (max-width: 54rem) {
  .exhibition {
    grid-template-columns: 1fr;
  }
}

.exhibition-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  width: 100%;
}

.exhibition h2 {
  margin-bottom: 0.25rem;
}

.exhibition .details {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
}

.exhibition-text p {
  color: var(--ink-soft);
}

.exhibition .details + p {
  margin-top: 0;
}

.exhibitions-empty,
.partners-empty {
  color: var(--ink-soft);
  font-size: 1.15rem;
  max-width: 38rem;
  padding-bottom: var(--space-5);
}

/* --- Partner -------------------------------------------------------------- */

.partners {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  padding-bottom: var(--space-5);
}

.partner {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-3) var(--space-2) var(--space-2);
}

.partner h2 {
  font-size: 1.35rem;
  margin-bottom: var(--space-1);
}

.partner .social-links {
  margin-top: 0;
}

/* --- Kontakt ------------------------------------------------------------ */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding-bottom: var(--space-5);
}

@media (max-width: 54rem) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

.contact-info p {
  color: var(--ink-soft);
}

.contact-info .contact-email {
  font-family: var(--font-display);
  font-size: 1.35rem;
  display: inline-block;
  margin-block: var(--space-1) var(--space-2);
}

.social-links {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
  display: flex;
  gap: var(--space-2);
}

.contact-form {
  display: grid;
  gap: 1.25rem;
}

.form-field {
  display: grid;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.form-field input,
.form-field textarea {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  transition: border-color var(--transition);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.form-field textarea {
  resize: vertical;
  min-height: 9rem;
}

.button {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  border: none;
  font: inherit;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  justify-self: start;
}

.button:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

.form-hint {
  font-size: 0.85rem;
  color: var(--muted);
}

/* --- Footer ------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: var(--space-3);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}

.site-footer nav ul {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer a {
  color: var(--muted);
}

.site-footer a:hover {
  color: var(--ink);
}

/* --- Scroll-Reveal-Animationen ------------------------------------------ */

/* Nur ausblenden, wenn JavaScript läuft — sonst bleibt alles sichtbar. */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .artwork-image img,
  .main-nav a::after,
  .button {
    transition: none;
  }

  /* Laufband steht still und ist stattdessen von Hand scrollbar. */
  .werk-band {
    overflow-x: auto;
  }

  .werk-band-track {
    animation: none;
  }
}