:root {
  /* colors */
  --ink: #0e0e0e;
  --muted: #5c5c5c;
  --line: #e6e6e2;
  --accent: #ace600;
  --accent-text: #3a4408;
  --veil: #8a7000;
  --sans: "Helvetica Neue", Arial, sans-serif;

  /* spacing scale (8px base) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;

  /* type scale (ratio ~1.25) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.563rem;
  --text-xl: 1.953rem;
  --text-2xl: 2.441rem;
  --text-3xl: 3.052rem;

  --max-width: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  z-index: 200;
}

.skip-link:focus { left: var(--space-2); top: var(--space-2); }

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

/* ================= Mobile-first base ================= */

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.kontakt-link {
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s ease;
  padding: var(--space-1);
}

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

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.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); }

/* ---------- Off-canvas menu (all breakpoints) ---------- */

.menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 65;
}

.menu-backdrop.is-open { opacity: 1; pointer-events: auto; }

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 360px);
  background: #fff;
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.12);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 70;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
}

.mobile-menu.is-open { transform: translateX(0); }

.menu-close {
  align-self: flex-end;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  font-size: var(--text-xl);
  cursor: pointer;
  color: var(--ink);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-3);
}

.mobile-menu nav a {
  text-decoration: none;
  color: var(--ink);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  padding: var(--space-2) var(--space-1);
  min-height: 48px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.mobile-menu nav a.is-active { color: var(--accent-text); }

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

.hero {
  padding: var(--space-5) var(--space-3) var(--space-4);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.hero h1 {
  font-size: clamp(3rem, 16vw, 7rem);
  line-height: 0.9;
  margin: 0;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero-sub {
  margin-top: var(--space-3);
  font-size: var(--text-base);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin-top: var(--space-3);
}

/* ---------- Work sections ---------- */

.work {
  padding: var(--space-5) var(--space-3);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 80px;
}

.work-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.work-head h2 {
  font-size: var(--text-2xl);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.work-head p {
  max-width: 65ch;
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--muted);
}

.accent-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  font-size: var(--text-xs);
  padding: 4px 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

/* ---------- Bento galleries ---------- */
/* Mobile default: uniform grid, no size variants */

.bento {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: 220px;
  gap: var(--space-1);
}

.plate {
  position: relative;
  padding: 0;
  border: none;
  cursor: zoom-in;
  overflow: hidden;
  background: #f2f2f0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  min-height: 48px;
}

.plate.is-visible { opacity: 1; transform: translateY(0); }

.plate::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--veil);
  opacity: 0.1;
  transition: opacity 0.4s ease;
  z-index: 1;
  pointer-events: none;
}

.plate:hover::before,
.plate:focus-visible::before { opacity: 0; }

.plate img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.08) saturate(0.88) brightness(1.03);
  transition: transform 0.5s ease;
}

.plate:hover img { transform: scale(1.04); }

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

footer {
  padding: var(--space-6) var(--space-3);
  text-align: center;
}

footer h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
}

footer p { margin: var(--space-1) 0; font-size: var(--text-base); }

footer a {
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s ease, color 0.2s ease;
  padding: var(--space-1) 0;
  display: inline-block;
}

footer a:hover { border-color: var(--ink); color: var(--accent-text); }

.footer-note {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--muted);
  font-style: italic;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(8, 8, 8, 0.96);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: var(--space-3);
}

.lightbox.is-open { display: flex; }

.lightbox-img {
  max-width: 88vw;
  max-height: 80vh;
  object-fit: contain;
  filter: contrast(1.08) saturate(0.88) brightness(1.03);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close { top: var(--space-2); right: var(--space-2); font-size: var(--text-xl); }
.lightbox-prev { left: 4px; top: 50%; transform: translateY(-50%); font-size: var(--text-2xl); }
.lightbox-next { right: 4px; top: 50%; transform: translateY(-50%); font-size: var(--text-2xl); }

/* ================= Tablet enhancements ================= */

@media (min-width: 768px) {
  .site-header-inner { padding: var(--space-2) var(--space-4); }

  .hero { padding: var(--space-7) var(--space-4) var(--space-5); text-align: left; }

  .work { padding-left: 0; padding-right: 0; }

  .work-head { flex-direction: column; align-items: stretch; padding: 0 var(--space-4); }
}

/* ================= Desktop: full-bleed galleries ================= */

@media (min-width: 1024px) {
  .site-header-inner { padding: var(--space-3) var(--space-4); }

  .work { padding: var(--space-7) 0; }

  .work-head { padding: 0 var(--space-4); }

  .work-head h2 { font-size: var(--text-3xl); }

  /* bento galleries span the full viewport width, edge-to-edge */
  .bento-4 { grid-template-columns: repeat(4, 1fr); grid-auto-rows: 220px; gap: var(--space-1); }
  .bento-3 { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 260px; gap: var(--space-1); }
  .bento-2 { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 420px; gap: var(--space-1); }

  .b-wide, .b-big { grid-column: span 2; grid-row: span 2; }
  .b-tall { grid-row: span 2; }
}