*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #fff;
  --text: #222;
  --text-dim: #aaa;
  --nav-active: #000;
  --thumb-active: #000;
  --sidebar-width: 160px;
  --nav-btn-width: 2.5rem;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, sans-serif; /* overridden per-site via inline <style> */
  font-size: 13px;
}

/* ── Page wrapper: constrains total width ── */

.page-wrap {
  width: 100%;
  max-width: calc(var(--sidebar-width) + 1200px + 2rem);
  margin: 0 auto;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.site-footer {
  margin-top: 1.5rem;
  padding: 1rem 1.5rem 2rem;
  color: var(--text-dim);
  font-size: 0.9em;
  text-align: center;
  letter-spacing: 0.02em;
}

/* ── Title bar ── */

.title-bar {
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  color: var(--nav-active);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.03em;
}

/* ── Layout: sidebar + content ── */

.layout {
  display: flex;
  min-height: calc(100vh - 3rem);
  flex: 1;
}

/* ── Sidebar nav ── */

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: calc(100vh - 3rem);
  overflow-y: auto;
}

.gallery-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.gallery-nav a,
.page-nav a {
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}

.gallery-nav a:hover,
.gallery-nav a.active,
.page-nav a:hover,
.page-nav a.active {
  color: var(--nav-active);
}

/* ── Main content ── */

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 2rem 2rem 2rem 0;
  gap: 1.5rem;
  min-width: 0;
}

/* ── Prose ── */

.prose {
  max-width: min(600px, calc(100% - (2 * var(--nav-btn-width))));
  line-height: 1.7;
  color: var(--text);
  margin: 0 auto;
}

.prose h1 { font-size: 1.3rem; margin-bottom: 0.4rem; }
.prose h2 { font-size: 1rem;   margin-bottom: 0.3rem; }
.prose p  { margin-bottom: 0.8rem; }
.prose a  { color: var(--nav-active); }

/* ── Gallery viewer ── */

.gallery-viewer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 1200px;
}

.viewer-wrap {
  display: flex;
  align-items: center;
  height: 65vh;
}

.viewer-img-wrap {
  flex: 1;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.viewer-img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

/* ── Prev / Next buttons ── */

.nav-btn {
  background: none;
  border: none;
  color: #000;
  font-size: 2rem;
  cursor: pointer;
  width: var(--nav-btn-width);
  opacity: 0.12;
  transition: opacity 0.2s;
  user-select: none;
  line-height: 1;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-btn:hover {
  opacity: 0.6;
}

/* ── Thumbnail strip ── */

.thumb-strip-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.thumb-strip-wrap::-webkit-scrollbar {
  display: none;
}

.thumb-strip {
  display: flex;
  gap: 5px;
  padding: 2px 0;
}

.thumb-btn {
  background: none;
  border: 2px solid transparent;
  padding: 0;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s;
}

.thumb-btn img {
  display: block;
  height: 72px;
  width: auto;
  opacity: 0.4;
  transition: opacity 0.15s;
}

.thumb-btn:hover img {
  opacity: 0.7;
}

.thumb-btn.active {
  border-color: var(--thumb-active);
}

.thumb-btn.active img {
  opacity: 1;
}

/* ── Mobile menu button (hidden on desktop) ── */

.menu-btn {
  display: none;
}

/* ── Mobile menu overlay (hidden on desktop) ── */

.mobile-menu {
  display: none;
}

/* ── Mobile ── */

@media (max-width: 640px) {
  /* Title bar stays, but tighter */
  .title-bar {
    padding: 0.9rem 1rem;
  }

  .menu-btn {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-dim);
    font-family: inherit;
    font-size: inherit;
    letter-spacing: 0.03em;
    padding: 0;
  }

  .menu-btn:hover {
    color: var(--nav-active);
  }

  .sidebar {
    display: none;
  }

  .mobile-menu {
    display: flex;
    position: fixed;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
  }

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

  .mobile-menu-close {
    position: absolute;
    top: 1.1rem;
    right: 1.2rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-dim);
    line-height: 1;
    padding: 0;
  }

  .mobile-menu-close:hover {
    color: var(--nav-active);
  }

  .mobile-menu-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
  }

  .mobile-menu-nav a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 1.15rem;
    letter-spacing: 0.03em;
  }

  .mobile-menu-nav a:hover,
  .mobile-menu-nav a.active {
    color: var(--nav-active);
  }

  .mobile-menu-sep {
    height: 1.5rem;
  }

  main {
    padding: 0.5rem;
    gap: 1rem;
  }

  .site-footer {
    margin-top: 1rem;
    padding: 0.8rem 1rem 1.4rem;
  }

  /* Taller viewer on mobile to allow wider image rendering */
  .viewer-wrap {
    height: min(82vh, calc(100vw + 2rem));
    min-height: 260px;
  }

  /* Hide prev/next buttons on touch — swipe is used instead */
  .nav-btn {
    display: none;
  }

  /* Prose not indented on mobile — no buttons to align with */
  .prose {
    margin: 0;
  }

  .thumb-btn img {
    height: 52px;
  }
}

/* ── Overview ── */

.overview-intro {
  margin-bottom: 3rem;
  max-width: 520px;
}

.overview-list {
  display: flex;
  flex-direction: column;
}

.overview-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-bottom: 3rem;
}

.overview-card-img-link {
  display: block;
  line-height: 0;
}

.overview-card-img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.2s;
}

.overview-card-img-link:hover .overview-card-img {
  opacity: 0.85;
}

.overview-card-meta {
  color: var(--text-dim);
  letter-spacing: 0.03em;
  line-height: 1.6;
  margin: 0;
}

.overview-card-title,
.overview-card-title:link,
.overview-card-title:visited,
.overview-card-title:active {
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}

.overview-card-title:hover {
  color: var(--nav-active);
}

/* ── Log entry ── */

.photo-log-entry {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

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

.photo-log-meta {
  color: var(--text-dim);
  letter-spacing: 0.03em;
}

.photo-log-date {
  color: var(--text-dim);
}

.photo-log-sep {
  padding: 0 0.1em;
}

.photo-log-title {
  color: var(--text);
}

.photo-log-body {
  max-width: min(600px, 100%);
  margin: 0;
  font-style: italic;
}

.photo-log-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 0.4rem;
}

.photo-log-nav-link {
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}

.photo-log-nav-link:hover {
  color: var(--nav-active);
}

/* ── Date browser ── */

.photo-log-date-browser {
  margin-top: 1rem;
}

.date-year {
  margin-bottom: 0.25rem;
}

.date-year > summary {
  cursor: pointer;
  list-style: none;
  user-select: none;
  color: var(--text-dim);
  letter-spacing: 0.03em;
  transition: color 0.15s;
  padding: 0.1rem 0;
}

.date-year > summary::-webkit-details-marker {
  display: none;
}

.date-year > summary:hover {
  color: var(--nav-active);
}

.date-year-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.45rem;
  padding: 0.25rem 0 0.1rem 0.5rem;
}

.date-month-label {
  color: var(--text-dim);
  letter-spacing: 0.03em;
  margin-right: 0.1rem;
}

.date-day {
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}

.date-day:hover,
.date-day.active {
  color: var(--nav-active);
}