/* design-notes/design-notes-shell.css, extends styles.css for the Design Notes section */

/* ─── Shared: back link + tag ───────────────────────────────────────────── */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(242, 240, 236, 0.65);
  transition: color var(--t-fast) var(--ease), gap var(--t-fast) var(--ease);
}
.back-link:hover { color: var(--accent); gap: 14px; }
.back-link span { display: inline-block; transition: transform var(--t-fast) var(--ease); }
.back-link:hover span { transform: translateX(-3px); }

.note-tag {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.note-tag::after {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent);
}

/* ─── Notes hero (listing + article share the dark hero) ───────────────── */

.notes-hero {
  background: #0A0A0A;
  color: #F2F0EC;
  padding-top: calc(var(--pad-y) * 0.85);
  padding-bottom: calc(var(--pad-y) * 0.55);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}
.notes-hero .eyebrow { color: rgba(242, 240, 236, 0.65); margin-bottom: 20px; }

.notes-title {
  font-size: clamp(40px, 5.6vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  color: #F2F0EC;
  max-width: 20ch;
}
.notes-title em { font-style: normal; color: var(--accent); }
.notes-sub {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.5;
  color: rgba(242, 240, 236, 0.78);
  max-width: 58ch;
  margin-top: 24px;
}

/* ─── Filters ────────────────────────────────────────────────────────────── */

.notes-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}
.notes-filter {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 10px 18px;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.notes-filter:hover { border-color: var(--accent); color: var(--fg); }
.notes-filter.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* ─── Notes grid + card ──────────────────────────────────────────────────── */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
.note-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.note-card-img {
  position: relative;
  aspect-ratio: 1200 / 630;
  overflow: hidden;
  background: #1A1A1A;
  border-radius: 2px;
}
.note-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 1.2s var(--ease-out);
}
.note-card:hover .note-card-img img { transform: scale(1.04); }
.note-card-body { display: flex; flex-direction: column; gap: 12px; }
.note-card-body h3 {
  font-size: clamp(20px, 1.9vw, 26px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--fg);
}
.note-card-body p {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 52ch;
}
.note-card-meta {
  font-family: var(--mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}

.notes-empty {
  padding: 60px 0;
  color: var(--muted);
  font-size: 17px;
  border-top: 1px solid var(--rule);
}

@media (max-width: 720px) {
  .notes-grid { grid-template-columns: 1fr; gap: 48px; }
}

/* ─── Article hero ───────────────────────────────────────────────────────── */

.notes-hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 56px;
}
.note-title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.028em;
  font-weight: 600;
  color: #F2F0EC;
  max-width: 22ch;
}
.note-sub {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.5;
  color: rgba(242, 240, 236, 0.78);
  max-width: 60ch;
  margin-top: 24px;
}
.note-meta {
  display: inline-block;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(242, 240, 236, 0.5);
}
.note-cover-wrap { margin-top: 48px; }
.note-cover {
  aspect-ratio: 1200 / 630;
  overflow: hidden;
  border-radius: 2px;
  background: #1A1A1A;
}
.note-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ─── Article body ───────────────────────────────────────────────────────── */

.note-main { padding: calc(var(--pad-y) * 0.75) 0; }
.note-article { max-width: 68ch; margin: 0 auto; }

.note-h2 {
  font-size: clamp(26px, 2.8vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--fg);
  margin-top: 64px;
  margin-bottom: 8px;
}
.note-h2:first-child { margin-top: 0; }
.note-h3 {
  font-size: clamp(19px, 1.8vw, 23px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--fg);
  margin-top: 40px;
  margin-bottom: 4px;
}
.note-p {
  font-size: 17.5px;
  line-height: 1.68;
  color: var(--fg-soft);
  margin-top: 20px;
}
.note-h2 + .note-p,
.note-h3 + .note-p { margin-top: 16px; }

.note-image { margin: 40px 0 0; display: flex; flex-direction: column; gap: 14px; }
.note-image-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: #FFFFFF;
}
.note-image-frame img { width: 100%; height: auto; display: block; }
.note-image figcaption {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 60ch;
}

@media (max-width: 720px) {
  .notes-hero-top { flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 32px; }
  .note-p { font-size: 16.5px; }
}