/* ─────────────────────────────────────────────
   Photography — "The Hidden Room"
   Dark, immersive, same voice — different world.
───────────────────────────────────────────── */

:root {
  --bg:           #faf9f6;
  --surface:      #f0efe9;
  --text:         #1c1c1c;
  --text-dim:     #6b6760;
  --text-dimmer:  #b0ada6;
  --accent:       #a84f3e;
  --rule:         #e4e2dc;
  --font-serif:   "Fraunces", Georgia, serif;
  --font-sans:    "Inter", -apple-system, sans-serif;
  --col:          1100px;
}

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

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-optical-sizing: auto;
}

/* ── Top bar ── */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.3rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(250,249,246,0.95) 60%, transparent);
  pointer-events: none;
}

.topbar a,
.topbar button {
  pointer-events: all;
}

.back-link {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 450;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.back-link:hover { color: var(--text); }

.back-arrow {
  font-size: 0.9em;
  line-height: 1;
}

/* ── View toggle ── */
.view-toggle {
  display: flex;
  gap: 0.2rem;
  background: rgba(0,0,0,0.04);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.2rem;
}

.view-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  color: var(--text-dim);
  transition: background 0.15s, color 0.15s;
  display: flex;
  align-items: center;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: none;
  font-weight: 500;
}

.view-btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.view-btn:hover { color: var(--text); }

.view-btn.active {
  background: rgba(0,0,0,0.08);
  color: var(--text);
}

/* ── Page header ── */
.page-header {
  max-width: var(--col);
  margin: 0 auto;
  padding: 7.5rem 2rem 3rem;
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 300;
  letter-spacing: -0.018em;
  line-height: 1.1;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.page-subtitle {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  margin: 0;
}

/* ── Series ── */
.series {
  max-width: var(--col);
  margin: 0 auto;
  padding: 0 2rem 5rem;
  border-top: 1px solid var(--rule);
  margin-top: 1rem;
}

.series + .series {
  margin-top: 0;
}

.series-header {
  padding: 2.5rem 0 1.8rem;
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
}

.series-name {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0;
}

.series-count {
  font-size: 0.75rem;
  color: var(--text-dimmer);
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* ── Scroll view ── */
.photo-scroll {
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  max-width: 900px;
  justify-items: center;
}

.photo-scroll-item {
  width: min(760px, 100%);
  border: 0;
  background: transparent;
  text-align: center;
  padding: 0;
  display: block;
  color: var(--text);
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.photo-scroll-item img {
  width: 100%;
  max-height: 64vh;
  object-position: center;
  object-fit: cover;
  display: block;
  background: var(--surface);
  border: 1px solid var(--rule);
}

.photo-scroll-caption {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  text-align: center;
}

.photo-scroll-item:hover {
  transform: translateY(-1px);
}

.photo-scroll-item:hover .photo-scroll-caption {
  color: var(--accent);
}

/* ── Grid view ── */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 0.75rem;
}

/* active state toggling */
body.view-scroll .photo-scroll { display: grid; }
body.view-scroll .photo-grid { display: none; }
body.view-grid .photo-scroll { display: none; }
body.view-grid .photo-grid { display: grid; }

/* ── Photo item (shared) ── */
.photo-item {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  cursor: pointer;
}

/* grid item */
.photo-grid .photo-item {
  aspect-ratio: 4 / 3;
}

.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease, filter 0.3s ease;
  filter: brightness(0.88);
}

.photo-item:hover img {
  transform: scale(1.018);
  filter: brightness(1);
}

/* placeholder for empty slots */
.photo-item.placeholder {
  background: var(--surface);
  cursor: default;
  border: 1px dashed var(--rule);
}

.photo-item.placeholder::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-dimmer);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 10, 9, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-img-wrap {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img-wrap img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  display: block;
}

.lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.8rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.3rem;
  transition: color 0.2s;
  font-family: var(--font-sans);
}

.lightbox-close:hover { color: var(--text); }

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 1rem;
  transition: color 0.2s;
  font-size: 1.1rem;
}

.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

.lightbox-prev:hover,
.lightbox-next:hover { color: var(--text); }

.lightbox-counter {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  color: var(--text-dimmer);
  letter-spacing: 0.1em;
}

/* ── Footer ── */
.photo-footer {
  max-width: var(--col);
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
  border-top: 1px solid var(--rule);
  font-size: 0.78rem;
  color: var(--text-dimmer);
  display: flex;
  justify-content: space-between;
}

.photo-footer a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.photo-footer a:hover { color: var(--text); }

/* ── Responsive ── */
@media (max-width: 800px) {
  .topbar { padding: 1.1rem 1.2rem; }

  .page-header { padding: 6.5rem 1.2rem 2.5rem; }

  .series { padding: 0 1.2rem 4rem; }

  .photo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
  }

  .photo-scroll {
    gap: 1rem;
  }

}

@media (max-width: 500px) {
  .photo-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .photo-item img { transition: none; }
  .lightbox       { transition: none; }
}