/* Shared archive layout for Blog, Projects, and Research. */
.collection-index {
  padding-top: clamp(2.5rem, 5vw, 5rem);
}

.collection-index .collection-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  align-items: stretch;
}

.collection-index .collection-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 265px;
  padding: clamp(1.5rem, 2.6vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: 17px;
  background: var(--color-panel);
  box-shadow: 0 4px 15px rgba(21, 42, 66, 0.025);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.collection-index .collection-card:hover,
.collection-index .collection-card:focus-within {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border));
  box-shadow: 0 12px 36px rgba(21, 42, 66, 0.10);
}

.collection-index .collection-card .collection-meta {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.69rem;
  line-height: 1.7;
  text-transform: uppercase;
  letter-spacing: 0.065em;
  margin: 0 0 1.2rem;
}

.collection-index .collection-card > .collection-meta {
  order: -1;
}

.collection-index .collection-card h2 {
  margin-bottom: 0.9rem;
  font-weight: 650;
  font-size: clamp(1.12rem, 1.7vw, 1.4rem);
  line-height: 1.35;
  letter-spacing: -0.023em;
}

.collection-index .collection-card h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.collection-index .collection-card h2 a:hover {
  color: var(--color-primary);
}

.collection-index .collection-card .collection-summary {
  color: var(--color-text-muted);
  line-height: 1.8;
  font-size: 0.93rem;
  margin-bottom: 1.5rem;
  max-width: 46ch;
}

.collection-index .collection-card .btn {
  width: fit-content;
  min-height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--color-primary);
  font-size: 0.87rem;
  font-weight: 700;
  margin-top: auto;
  text-decoration: none;
}

.collection-index .collection-card .btn::after {
  content: "↗";
  display: inline-block;
  margin-left: 0.4rem;
  transition: transform 180ms ease;
}

.collection-index .collection-card .btn:hover::after {
  transform: translate(2px, -2px);
}

.collection-index .project-content,
.collection-index .collection-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0;
}

.collection-index .project-content header,
.collection-index .research-head {
  margin-bottom: 0;
}

.collection-index .project-figure {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border: 1px solid var(--color-border);
  border-radius: 11px;
  margin: 0.35rem 0 1.5rem;
}

.collection-index .thumbs {
  border-radius: 11px;
  margin: 0.35rem 0 1.5rem;
}

.collection-index .thumbs img {
  object-fit: contain;
  background: white;
}

.collection-index .thumbs figcaption {
  line-height: 1.6;
  padding: 0.85rem 1rem;
}

.collection-index .project-links,
.collection-index .actions {
  margin-top: auto;
  padding-top: 0;
  gap: 1.25rem;
}

/* The first item shares the Blog's navy feature treatment on every index. */
.collection-index .collection-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(225px, 0.68fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: stretch;
  min-height: 305px;
  padding: clamp(1.65rem, 3.5vw, 3rem);
  background:
    radial-gradient(ellipse at right top, rgba(166, 204, 208, 0.14), transparent 48%),
    linear-gradient(125deg, #18344b 0%, #152b41 100%);
  border: 1px solid #2e5667;
  color: #e8f1f3;
}

.collection-index .collection-featured:hover,
.collection-index .collection-featured:focus-within {
  border-color: #639ead;
}

.collection-index .collection-featured .feature-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  color: #f2c99c;
  margin: 0 0 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.collection-index .collection-featured h2 {
  color: #f6f5ef;
  font-family: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
  font-size: clamp(1.8rem, 3.2vw, 2.9rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.036em;
  max-width: 630px;
  margin-bottom: 1.2rem;
}

.collection-index .collection-featured h2 a,
.collection-index .collection-featured h2 a:hover {
  color: #f6f5ef;
}

.collection-index .collection-featured h2 a:hover {
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.collection-index .collection-featured .collection-meta {
  color: #a5c2ce;
  order: 0;
  margin-bottom: 1rem;
}

.collection-index .collection-featured .collection-summary {
  color: #cedde2;
  font-size: 1rem;
  line-height: 1.75;
  max-width: 57ch;
  margin-bottom: 1.4rem;
}

.collection-index .collection-featured .btn,
.collection-index .collection-featured .btn:hover {
  color: #f4c88c;
}

.collection-index .collection-figure {
  min-width: 0;
  width: 100%;
  align-self: center;
  overflow: hidden;
  margin: 0;
  border: 1px solid rgba(194, 222, 226, 0.25);
  border-radius: 12px;
  background: rgba(5, 19, 30, 0.3);
}

.collection-index .collection-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  margin: 0;
  border: 0;
  border-radius: 0;
}

.collection-index .collection-figure figcaption {
  color: #b8cece;
  background: transparent;
  border-color: rgba(194, 222, 226, 0.25);
}

.collection-publications .pub-list {
  padding: clamp(1.5rem, 2.6vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: 17px;
  background: var(--color-panel);
}

@media (max-width: 700px) {
  .collection-index .collection-grid,
  .collection-index .collection-featured {
    grid-template-columns: minmax(0, 1fr);
  }

  .collection-index .collection-card {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .collection-index .collection-card,
  .collection-index .collection-card .btn::after {
    transition: none;
  }

  .collection-index .collection-card:hover,
  .collection-index .collection-card:focus-within {
    transform: none;
  }
}

@media print {
  .collection-index .collection-card {
    break-inside: avoid;
    transform: none;
  }

  .collection-index .collection-featured,
  .collection-index .collection-featured .collection-figure {
    background: white !important;
    box-shadow: none !important;
  }

  .collection-index .collection-featured h2,
  .collection-index .collection-featured h2 a,
  .collection-index .collection-featured .feature-eyebrow,
  .collection-index .collection-featured .collection-meta,
  .collection-index .collection-featured .collection-summary,
  .collection-index .collection-featured .btn,
  .collection-index .collection-featured figcaption {
    color: black !important;
  }
}