:root {
  --sidebar-width: 260px;
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #767676;
  --border: #e8e6e2;
  --accent: #1a1a1a;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; margin: 0; padding: 0; }

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

.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;
}

/* ---------- Sidebar ---------- */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 100;
  background: var(--bg);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 48px 32px 32px;
}

.site-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.5;
  margin-bottom: 56px;
}

.site-nav {
  flex: 1;
}

.nav-group-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.nav-group ul {
  margin-bottom: 32px;
}

.site-nav li {
  margin-bottom: 12px;
}

.site-nav a {
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.site-nav a:hover {
  border-color: var(--text);
}

.site-nav a.active {
  font-weight: 600;
  border-color: var(--text);
}

.nav-flat {
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

.nav-flat li:first-child { margin-top: 20px; }

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding-top: 32px;
}

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

/* ---------- Mobile nav toggle ---------- */

.nav-toggle {
  display: none;
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 200;
  width: 36px;
  height: 36px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
}

/* ---------- Main content ---------- */

.main-content {
  margin-left: var(--sidebar-width);
  padding: 56px 48px 100px;
  min-height: 100vh;
}

.page-title {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 28px;
}

/* Image grid: justified rows, fixed row height, no cropping */

.grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.grid-row {
  display: flex;
  gap: 6px;
}

.grid-row.grid-row--fill .grid-item {
  flex: 1 1 0;
  min-width: 0;
}

.grid-row:not(.grid-row--fill) .grid-item {
  flex: 0 0 auto;
}

.grid-item {
  cursor: pointer;
  overflow: hidden;
  background: #f4f3f1;
  height: var(--row-height, 260px);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.grid-item:hover img {
  transform: scale(1.04);
}

/* About page */

.about-page {
  max-width: 720px;
}

.about-photo {
  width: 100%;
  max-width: 360px;
  height: auto;
  margin-bottom: 36px;
}

.about-page h1 {
  font-size: 20px;
  letter-spacing: 0.02em;
  margin: 0 0 20px;
}

.about-page p {
  font-size: 15px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 18px;
  max-width: 560px;
}

.about-page a {
  border-bottom: 1px solid var(--text);
}

/* Home hero */

.home-intro {
  margin-bottom: 32px;
  max-width: 560px;
}

.home-intro p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- Blog ---------- */

.blog-list {
  display: flex;
  flex-direction: column;
  max-width: 760px;
}

.blog-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.blog-item:first-child {
  padding-top: 0;
}

.blog-item-cover {
  flex: none;
  width: 160px;
  height: 110px;
  object-fit: cover;
  background: #f4f3f1;
}

.blog-item-body {
  flex: 1;
  min-width: 0;
}

.blog-item-title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 6px;
}

.blog-item:hover .blog-item-title {
  text-decoration: underline;
}

.blog-item-meta {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 10px;
}

.blog-item-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: #333;
  margin: 0;
}

.blog-post {
  max-width: 640px;
}

.blog-post-cover {
  width: 100%;
  height: auto;
  margin-bottom: 28px;
  background: #f4f3f1;
}

.blog-post h1 {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.blog-post-meta {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 28px;
}

.blog-post p {
  font-size: 15px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 18px;
}

.blog-post--essay {
  max-width: 900px;
}

.day-section {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.day-section h2 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.day-section > p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0 0 18px;
}

.day-hero {
  width: 100%;
  height: auto;
  margin-bottom: 6px;
  background: #f4f3f1;
}

.day-photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 6px;
}

.day-photos img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  background: #f4f3f1;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
}

.lightbox[hidden] { display: none; }

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

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  line-height: 1;
  padding: 12px;
}

.lightbox-close { top: 16px; right: 24px; font-size: 28px; }
.lightbox-prev { left: 12px; top: 50%; transform: translateY(-50%); font-size: 48px; }
.lightbox-next { right: 12px; top: 50%; transform: translateY(-50%); font-size: 48px; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .nav-toggle { display: flex; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 2px 0 12px rgba(0,0,0,0.08);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-inner {
    padding-top: 90px;
  }

  .main-content {
    margin-left: 0;
    padding: 90px 20px 80px;
  }

  .grid, .grid-row {
    gap: 4px;
  }

  .blog-item {
    flex-direction: column;
    gap: 14px;
  }

  .blog-item-cover {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
  }
}