/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --bg: #0c0c0d;
  --fg: #ededed;
  --muted: #9a9a9a;
  --line: #2a2a2c;
  --accent: #ededed;
  --maxw: 1400px;
  --gap: 14px;
  --header-h: 64px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Helvetica Neue", sans-serif;
}

body {
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
a:hover { color: #fff; }
img { display: block; max-width: 100%; }

/* ---------- Header ---------- */
#site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-h);
  padding: 0 clamp(16px, 4vw, 40px);
  background: rgba(12, 12, 13, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

#site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 30px);
}

#site-header nav a {
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
#site-header nav a:hover { color: var(--fg); }
#site-header nav a.active {
  color: var(--fg);
  border-bottom-color: var(--fg);
}

#lang-toggle {
  background: none;
  border: 1px solid var(--line);
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
#lang-toggle:hover { color: var(--fg); border-color: var(--muted); }

#menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--fg);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------- Views ---------- */
.view { display: none; }
.view.active { display: block; animation: fade 0.4s ease; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

main { min-height: calc(100vh - var(--header-h) - 60px); }

/* ---------- Gallery grid (masonry via columns) ---------- */
.grid {
  column-gap: var(--gap);
  columns: 4 280px;
  padding: clamp(16px, 4vw, 40px);
  max-width: var(--maxw);
  margin: 0 auto;
}

.grid figure {
  margin: 0 0 var(--gap);
  break-inside: avoid;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  background: #161617;
}
.grid img {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease, opacity 0.6s ease;
  opacity: 0;
}
.grid img.loaded { opacity: 1; }
.grid figure:hover img { transform: scale(1.04); }

.grid figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 28px 14px 12px;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.65));
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}
.grid figure:hover figcaption { opacity: 1; transform: none; }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 25vh 1rem;
}

/* ---------- Prose pages (about / contact / legal) ---------- */
.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(40px, 8vw, 90px) clamp(20px, 6vw, 40px);
}
.prose h1 {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 1.2rem;
}
.prose h2 {
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  margin: 2rem 0 0.4rem;
}
.prose p { color: #d4d4d4; margin: 0 0 1rem; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Contact form ---------- */
#contact-form { display: flex; flex-direction: column; gap: 1.1rem; }
#contact-form label { display: flex; flex-direction: column; gap: 0.4rem; }
#contact-form label span {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
#contact-form input,
#contact-form textarea {
  background: #161617;
  border: 1px solid var(--line);
  color: var(--fg);
  font: inherit;
  padding: 0.7rem 0.85rem;
  border-radius: 6px;
  resize: vertical;
}
#contact-form input:focus,
#contact-form textarea:focus {
  outline: none;
  border-color: var(--muted);
}
#contact-form input.invalid,
#contact-form textarea.invalid { border-color: #b35; }

#contact-form .hp {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  opacity: 0;
}

#contact-submit {
  align-self: flex-start;
  background: var(--fg);
  color: #000;
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.82rem;
  border: none;
  padding: 0.75rem 1.8rem;
  border-radius: 999px;
  cursor: pointer;
  transition: opacity 0.2s;
}
#contact-submit:hover { opacity: 0.85; }
#contact-submit:disabled { opacity: 0.5; cursor: default; }

#contact-status { min-height: 1.4rem; font-size: 0.92rem; margin: 0; }
#contact-status.ok { color: #6bd089; }
#contact-status.err { color: #e08; }

/* ---------- Footer ---------- */
#site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  padding: 26px 1rem;
  border-top: 1px solid var(--line);
}
#site-footer a:hover { color: var(--fg); }
#site-footer .sep { margin: 0 0.6rem; }

/* ---------- Language visibility ---------- */
[data-lang] { display: none; }
html[lang="de"] [data-lang="de"],
html[lang="en"] [data-lang="en"] { display: block; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(8, 8, 9, 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s;
}
.lightbox.open { opacity: 1; visibility: visible; }

.lb-stage {
  margin: 0;
  max-width: 92vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lb-img {
  max-width: 92vw;
  max-height: 82vh;
  width: auto; height: auto;
  object-fit: contain;
  box-shadow: 0 10px 60px rgba(0, 0, 0, 0.6);
  user-select: none;
}
.lb-caption {
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-top: 0.9rem;
  text-align: center;
  min-height: 1.2rem;
}

.lb-btn {
  position: absolute;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 2;
}
.lb-btn:hover { background: rgba(255, 255, 255, 0.16); }
.lb-close {
  top: 18px; right: 18px;
  width: 44px; height: 44px;
  font-size: 1.1rem; border-radius: 50%;
}
.lb-prev, .lb-next {
  top: 50%;
  transform: translateY(-50%);
  width: 54px; height: 80px;
  font-size: 2.4rem;
  border-radius: 8px;
}
.lb-prev { left: 14px; }
.lb-next { right: 14px; }
.lb-counter {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  #menu-toggle { display: block; }
  #site-header nav {
    position: absolute;
    top: var(--header-h);
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(12, 12, 13, 0.98);
    border: 1px solid var(--line);
    border-right: none;
    padding: 1.4rem 1.8rem;
    border-bottom-left-radius: 10px;
    transform: translateX(110%);
    transition: transform 0.3s ease;
  }
  #site-header nav.open { transform: none; }
  .grid { columns: 2 150px; }
  .lb-prev, .lb-next { width: 40px; height: 64px; font-size: 1.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}