/*
 * Gallery-style redesign, Phase 1: top nav + typography/color foundation.
 * Layered after poole.css / hyde.css to override the old sidebar layout.
 */

:root {
  --color-bg:      #ffffff;
  --color-text:    #1a1a1a;
  --color-muted:   #6b6b6b;
  --color-border:  #e5e5e5;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Space Grotesk", "PT Sans", Helvetica, Arial, sans-serif;
  color: var(--color-text);
}

.tags-expo-section h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover, a:focus {
  color: var(--color-text);
  text-decoration: underline;
}

/* ---- Top nav ---- */

.topnav {
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.topnav-inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.25rem 1rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.topnav-brand {
  display: flex;
  align-items: center;
  justify-self: start;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-text);
}
.topnav-brand:hover {
  text-decoration: none;
}

.topnav-mark {
  height: 2rem;
  width: auto;
  display: block;
  flex-shrink: 0;
  position: relative;
  top: 0.35rem;
}

.topnav-wordmark {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.topnav-social {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: 4.5rem;
  font-size: 1.3rem;
  color: var(--color-muted);
}
.topnav-social a {
  color: var(--color-muted);
  text-decoration: none;
  line-height: 1;
}
.topnav-social a:hover {
  opacity: 0.6;
  text-decoration: none;
}

.topnav-links {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.topnav-link {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  text-decoration: none;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid transparent;
}
.topnav-link:hover,
.topnav-link.active {
  border-bottom: 1px solid var(--color-text);
  text-decoration: none;
}

@media (max-width: 40em) {
  .topnav-inner {
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 0.75rem;
  }
  .topnav-brand,
  .topnav-social,
  .topnav-links {
    justify-self: start;
  }
  .topnav-links {
    gap: 1rem;
  }
}

/* ---- Content area: remove old fixed-sidebar offsets ---- */

.content {
  padding-top: 0;
  padding-bottom: 4rem;
  margin-left: 0 !important;
  margin-right: 0 !important;
  max-width: none;
}

.container {
  max-width: 44rem;
  padding-top: 3rem;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* ---- Post typography ---- */

.post {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
}

.post-title {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
}

a.post-title {
  text-decoration: none;
}
a.post-title:hover {
  text-decoration: none;
}

/* ---- Page typography (Research, etc.) ---- */

.page {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
}

.page-title {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
}

/* ---- Post cover image ---- */

.post-cover {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 1rem;
  margin: 1rem 0 1.5rem;
}

/* ---- Post grid (Blog listing) ---- */

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.post-card {
  display: block;
  color: var(--color-text);
  text-decoration: none;
}

.post-card-cover {
  border-radius: 0.85rem;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--color-border);
  margin-bottom: 0.85rem;
}
.post-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-card-cover-wide {
  aspect-ratio: auto;
  background-color: transparent;
}
.post-card-cover-wide img {
  width: 100%;
  height: auto;
  object-fit: initial;
}

.post-card-title {
  font-family: "Lato", "PT Sans", Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  margin: 0 0 0.25rem;
}
.post-card:hover .post-card-title {
  text-decoration: underline;
}

.post-card-date {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: 0;
}

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

.sitefooter {
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
}

.sitefooter-inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.sitefooter-social {
  font-size: 1.1rem;
  color: var(--color-text);
}
.sitefooter-social a {
  color: var(--color-text);
  text-decoration: none;
  margin: 0 0.4rem;
}

.sitefooter-copy {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: 0;
}