:root {
  --bg: #000000;
  --accent: #c5b396;
  --accent-dim: rgba(197, 179, 150, 0.45);
  --accent-soft: rgba(197, 179, 150, 0.7);
  --font: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
  /* Mockup 1920: left→gallery 879 (45.8%), gallery 786 (41%), chevron zone 255 (13.3%) */
  --pad-x: clamp(40px, 9.95vw, 191px);
  --pad-top: clamp(48px, 6.7vw, 128px);
  --gutter-x: 8px;
  --gutter-y: 8px;
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  height: 100%;
  overflow: hidden;
}

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

a:hover {
  opacity: 0.75;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

/*
  Sticky left chrome: logo + categories stay fixed.
  Only .main (gallery / about + form) scrolls.
*/
.page {
  display: grid;
  grid-template-columns: minmax(280px, 45.8fr) minmax(0, 41fr) minmax(56px, 13.3fr);
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "header main chevrons"
    "sidebar main chevrons";
  height: 100vh;
  height: 100dvh;
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  overflow: hidden;
}

.header {
  grid-area: header;
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: var(--pad-top) 12px 0 var(--pad-x);
  position: relative;
  z-index: 4;
}

.logo {
  flex: 0 0 auto;
}

.logo img {
  display: block;
  width: clamp(168px, 13.5vw, 260px);
  height: auto;
}

.top-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  /* kept near the mark; slightly tighter so the stronger nav + poptávka still sit in the left chrome */
  margin-top: clamp(28px, 2.1vw, 42px);
  margin-left: clamp(28px, 5.5vw, 96px);
  font-size: clamp(14px, 0.86vw, 16.5px);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: lowercase;
}

.top-nav .sep {
  opacity: 0.65;
  user-select: none;
}

.top-nav a {
  color: var(--accent-soft);
  padding: 0.2em 0.05em;
}

.top-nav a:hover,
.top-nav a.active {
  color: var(--accent);
  opacity: 1;
}

.top-nav a.active {
  font-weight: 600;
}

.top-nav a.nav-cta {
  margin-left: 4px;
  padding: 0.38em 0.9em;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.top-nav a.nav-cta:hover,
.top-nav a.nav-cta.active {
  background: var(--accent);
  color: #000;
  opacity: 1;
}

.sidebar {
  grid-area: sidebar;
  /* mockup: cats start ~215px below logo bottom */
  padding: clamp(80px, 11vw, 220px) 32px 64px var(--pad-x);
  overflow: hidden;
}

/* Page title sits in the empty band above the categories so the
   gallery, logo and navigation keep their places. */
h1 {
  margin: 0;
  max-width: 22em;
  font-size: clamp(12px, 0.73vw, 14px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--accent);
}

@media (min-width: 961px) {
  .sidebar {
    position: relative;
  }

  h1 {
    position: absolute;
    left: var(--pad-x);
    right: 32px;
    top: clamp(16px, 2.4vw, 40px);
  }
}

.cat-nav {
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 2.2vw, 42px);
}

.cat {
  align-self: flex-start;
  font-size: clamp(14px, 0.86vw, 16.5px);
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--accent-soft);
  transition: color 0.2s ease;
  line-height: 1.3;
  max-width: 22em;
}

.cat:hover {
  color: var(--accent);
}

.cat.active {
  color: var(--accent);
  font-weight: 600;
}

.main {
  grid-area: main;
  /* Align top padding with header (--pad-top); horizontal inset matches header right pad */
  padding: var(--pad-top) 12px 80px 12px;
  min-width: 0;
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  /* Scrollbar hidden until hover (Firefox) */
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}

.main:hover,
.main:focus-within {
  scrollbar-color: var(--accent-dim) transparent;
}

.main::-webkit-scrollbar {
  width: 6px;
}

.main::-webkit-scrollbar-track {
  background: transparent;
}

.main::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 3px;
}

.main:hover::-webkit-scrollbar-thumb,
.main:focus-within::-webkit-scrollbar-thumb {
  background: var(--accent-dim);
}

.gallery {
  position: relative;
  width: 100%;
  /* --gal-w / --gal-h set from measured PDF layout (pts) */
}

.gallery.masonry {
  /* height from measured aspect so absolute children fill precisely */
  width: 100%;
  height: auto;
  container-type: inline-size;
}

/* Grafický design captions, same weight as the PDF (regular, not a heading). */
.gallery.masonry .gallery-copy {
  position: absolute;
  left: 0;
  width: 100%;
  margin: 0;
  z-index: 1;
  pointer-events: none;
  color: var(--accent);
  font-weight: 400;
  letter-spacing: 0;
  text-align: left;
  hyphens: manual;
  line-height: 1.2;
  font-size: clamp(14px, 1.2vw, 22px);
  font-size: calc(22 / var(--gal-w, 786.72) * 100cqi);
  top: calc(var(--y) / var(--gal-h) * 100%);
  white-space: pre-line;
}

.gallery.fallback-rows .gallery-copy {
  position: relative;
  margin: 0 0 0.85em;
  color: var(--accent);
  font-weight: 400;
  line-height: 1.45;
  font-size: clamp(15px, 1.3vw, 20px);
  white-space: pre-line;
}

.gallery.masonry figure {
  position: absolute;
  margin: 0;
  overflow: hidden;
  background: #0a0a0a;
  left: calc(var(--x) / var(--gal-w) * 100%);
  top: calc(var(--y) / var(--gal-h) * 100%);
  width: calc(var(--w) / var(--gal-w) * 100%);
  height: calc(var(--h) / var(--gal-h) * 100%);
}

.gallery-open {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  cursor: zoom-in;
}

.gallery.masonry img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.35s ease;
}

/* Fallback stacked rows (no layout.json) */
.gallery.fallback-rows {
  display: flex;
  flex-direction: column;
  gap: var(--gutter-y);
}

.gallery.fallback-rows .gallery-row {
  display: flex;
  flex-direction: row;
  gap: var(--gutter-x);
  width: 100%;
}

.gallery.fallback-rows figure {
  margin: 0;
  overflow: hidden;
  background: #0a0a0a;
  flex: 1 1 100%;
  min-width: 0;
}

.gallery.fallback-rows img {
  display: block;
  width: 100%;
  height: auto;
}

.gallery.loading img {
  opacity: 0.3;
}

.about-panel {
  width: 100%;
  /* start near header band; slight offset so text breathes under logo */
  margin-top: clamp(8px, 1.5vw, 28px);
}

.about-inner {
  max-width: 46rem;
}

.about-text {
  margin: 0 0 1.35em;
  font-size: clamp(12px, 0.73vw, 14px);
  font-weight: 300;
  line-height: 1.75;
  color: var(--accent);
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.about-heading {
  margin: 1.6em 0 0.45em;
  font-size: clamp(12px, 0.73vw, 14px);
  font-weight: 500;
  line-height: 1.4;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.about-heading:first-child {
  margin-top: 0;
}

.contact {
  margin-top: 2.75em;
  font-size: clamp(11px, 0.68vw, 13px);
  font-weight: 400;
  line-height: 1.95;
}

.contact p {
  margin: 0;
}

.contact a:hover {
  text-decoration: underline;
  opacity: 1;
}

.contact .city {
  margin-top: 0.85em;
}

/* Poptávkový formulář — fields per PDF: jméno, email, zpráva, odeslat */
.inquiry-form {
  margin-top: 2.5em;
  display: flex;
  flex-direction: column;
  gap: 1.15em;
  max-width: 28em;
}

.inquiry-form .field {
  display: flex;
  flex-direction: column;
  gap: 0.45em;
}

.inquiry-form label {
  font-size: clamp(11px, 0.68vw, 13px);
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--accent);
}

.inquiry-form input,
.inquiry-form textarea {
  font: inherit;
  font-weight: 300;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent-dim);
  border-radius: 0;
  padding: 0.65em 0.75em;
  width: 100%;
  outline: none;
  transition: border-color 0.2s ease;
  resize: vertical;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: var(--accent);
}

.inquiry-form input[aria-invalid="true"],
.inquiry-form textarea[aria-invalid="true"] {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.field-error {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--accent);
}

.field-error[hidden] {
  display: none;
}

.form-note {
  margin: 0.15em 0 0;
  font-size: clamp(11px, 0.68vw, 13px);
  font-weight: 300;
  color: var(--accent-soft);
}

.inquiry-form textarea {
  min-height: 7.5em;
}

.inquiry-form .submit-btn {
  align-self: flex-start;
  margin-top: 0.35em;
  padding: 0.7em 1.75em;
  font-size: clamp(11px, 0.68vw, 13px);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: #000;
  background: var(--accent);
  border: 1px solid var(--accent);
  transition: opacity 0.2s ease, background 0.2s ease;
}

.inquiry-form .submit-btn:hover {
  opacity: 0.88;
}

.form-status {
  margin: 0.15em 0 0;
  font-size: clamp(11px, 0.68vw, 13px);
  font-weight: 300;
  color: var(--accent-soft);
}

.form-status[hidden] {
  display: none;
}

.form-status[data-tone="ok"],
.form-status[data-tone="error"] {
  color: var(--accent);
  font-weight: 400;
}

.inquiry-form .submit-btn:disabled {
  opacity: 0.6;
  cursor: progress;
}

.chevrons {
  grid-area: chevrons;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  height: 100%;
  color: var(--accent);
  opacity: 1;
  z-index: 2;
}

.chev {
  display: flex;
  align-items: center;
  justify-content: center;
  /* clearer hit target (~52px) */
  width: 52px;
  height: 52px;
  opacity: 1;
  color: var(--accent);
  transition: opacity 0.2s, transform 0.15s ease, filter 0.15s ease;
}

.chev:hover {
  transform: scale(1.1);
  filter: brightness(1.15);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

.chev:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

.chev svg {
  display: block;
  width: clamp(36px, 2.6vw, 48px);
  height: clamp(36px, 2.6vw, 48px);
  stroke-width: 2.25;
}

.gallery figure:hover img {
  opacity: 0.92;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Bottom fade sits over the gallery column; text hint is first-visit only. */
.scroll-edge {
  grid-area: main;
  align-self: end;
  z-index: 3;
  height: 92px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 16px;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.72) 55%, #000);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.scroll-edge.is-on {
  opacity: 1;
}

.scroll-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--accent);
}

.scroll-hint[hidden] {
  display: none;
}

.scroll-hint svg {
  display: block;
}

@keyframes hint-nudge {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

.chev.hint-pulse {
  animation: hint-nudge 1.35s ease-in-out 3;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 20;
  max-width: min(32rem, calc(100% - 32px));
  margin: 0;
  padding: 0.85em 1.15em;
  background: #000;
  color: var(--accent);
  border: 1px solid var(--accent);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.45;
  text-align: center;
}

.toast[hidden] {
  display: none;
}

@media (min-width: 961px) {
  /* Keep the left chrome, but don't leave a wide empty band before the photos. */
  .page {
    grid-template-columns: minmax(400px, 32vw) minmax(0, 1fr) minmax(68px, 96px);
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }

  .top-nav {
    margin-left: 0;
    margin-top: 0;
  }
}

@media (max-width: 960px) {
  body {
    overflow: auto;
    height: auto;
  }

  .page {
    grid-template-columns: 1fr 44px;
    grid-template-rows: auto auto 1fr;
    grid-template-areas:
      "header chevrons"
      "sidebar chevrons"
      "main chevrons";
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .header {
    flex-direction: column;
    gap: 14px;
    padding: 28px 24px 0;
  }

  .logo img {
    width: 160px;
  }

  .top-nav {
    margin-left: 0;
    margin-top: 0;
    font-size: 15px;
  }

  .top-nav a,
  .cat {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .top-nav a.nav-cta {
    position: fixed;
    top: 12px;
    right: 12px;
    bottom: auto;
    z-index: 8;
    margin-left: 0;
    background: #000;
    box-shadow: 0 0 0 8px #000;
  }

  .scroll-edge {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    margin-left: 0;
    height: 84px;
    grid-area: auto;
  }

  .sidebar {
    padding: 20px 24px 8px;
  }

  h1 {
    position: static;
    margin: 0 0 16px;
    max-width: 28em;
    font-size: 14px;
  }

  .cat-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 14px 22px;
  }

  .cat {
    max-width: none;
  }

  .main {
    padding: 16px 20px 48px;
    height: auto;
    overflow: visible;
  }

  .about-panel {
    margin-top: 0;
  }

  .inquiry-form {
    max-width: none;
  }
}

@media (max-width: 560px) {
  /* Stack masonry into a single column on narrow screens */
  .gallery.masonry {
    aspect-ratio: auto !important;
    height: auto !important;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .gallery.masonry figure {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    width: 100% !important;
    height: auto !important;
  }

  .gallery.masonry .gallery-open {
    height: auto;
  }

  .gallery.masonry img {
    height: auto;
    object-fit: contain;
  }

  .gallery.masonry figure,
  .gallery.masonry .gallery-copy {
    order: var(--stack);
  }

  .gallery.masonry .gallery-copy {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    height: auto;
    padding: 8px 0 4px;
    font-size: clamp(16px, 4.4vw, 20px);
    line-height: 1.45;
    pointer-events: none;
  }

  .gallery.fallback-rows .gallery-row {
    flex-direction: column;
  }

  .chevrons {
    display: none;
  }

  .page {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "sidebar"
      "main";
  }

  .about-text {
    text-align: left;
  }

  .scroll-hint {
    font-size: 13px;
  }
}

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

  .gallery.masonry img,
  .chev,
  .cat,
  .inquiry-form input,
  .inquiry-form textarea,
  .inquiry-form .submit-btn,
  .scroll-edge,
  .toast,
  .top-nav a {
    transition: none;
  }

  .chev.hint-pulse {
    animation: none;
  }

  .lightbox-ctrl {
    transition: none;
  }
}

dialog.lightbox {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-family: var(--font);
  overflow: hidden;
  touch-action: none;
}

dialog.lightbox[open] {
  display: flex;
  align-items: center;
  justify-content: center;
}

dialog.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.92);
}

.lightbox-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: min(92vw, 1600px);
  max-height: calc(100vh - 96px);
  max-height: calc(100dvh - 96px);
}

.lightbox-stage img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(92vw, 1600px);
  max-height: calc(100vh - 96px);
  max-height: calc(100dvh - 96px);
  object-fit: contain;
  background: #000;
}

.lightbox-ctrl {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: var(--accent);
}

.lightbox-ctrl svg {
  display: block;
  width: 32px;
  height: 32px;
}

.lightbox-ctrl:hover {
  transform: scale(1.08);
  opacity: 1;
}

.lightbox-close {
  top: 12px;
  right: 12px;
}

.lightbox-prev {
  left: 10px;
  top: calc(50% - 24px);
}

.lightbox-next {
  right: 10px;
  top: calc(50% - 24px);
}

.lightbox-count {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  margin: 0;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  pointer-events: none;
}