/* ============================================================
   RANDOM THOUGHTS — index.css
   Lattice-inspired design system
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --rt-bg: #fafaf8;
  --rt-surface: #ffffff;
  --rt-text: #16161a;
  --rt-muted: #5c5c66;
  --rt-faint: #98989f;
  --rt-line: #e9e7e1;
  --rt-line-strong: #d9d7d0;
  --rt-hover-bg: #f3f2ee;

  /* legacy aliases so common.css components (switch, settings, player) stay in sync */
  --rt-card: var(--rt-surface);
  --rt-card-hover: var(--rt-surface);
  --rt-accent: var(--lt-accent);
  --rt-accent-soft: var(--lt-accent-soft);

  --lt-shadow: 0 1px 2px rgba(20, 20, 30, 0.04), 0 8px 24px rgba(20, 20, 30, 0.05);
  --lt-shadow-lift: 0 2px 4px rgba(20, 20, 30, 0.05), 0 18px 40px rgba(20, 20, 30, 0.1);
}

html[data-theme="dark"] {
  --rt-bg: #0e0e11;
  --rt-surface: #17171b;
  --rt-text: #f1f1f4;
  --rt-muted: #a6a6b0;
  --rt-faint: #6c6c78;
  --rt-line: #26262c;
  --rt-line-strong: #3b3b44;
  --rt-hover-bg: #1f1f25;

  --lt-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  --lt-shadow-lift: 0 2px 6px rgba(0, 0, 0, 0.35), 0 18px 44px rgba(0, 0, 0, 0.45);
}

/* ---------- Base ---------- */
body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--rt-bg);
  color: var(--rt-text);
  transition: background-color 0.25s ease, color 0.25s ease;
}
h1, h2, h3, h4 { font-family: 'Plus Jakarta Sans', 'Inter', sans-serif; }
::selection { background: var(--lt-accent); color: #fff; }

.is-hidden { display: none !important; }
.rt-focus:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--lt-accent);
  outline-offset: 2px;
}
.card-shadow { box-shadow: var(--lt-shadow); }
.tracking-editorial { letter-spacing: 0.01em; }

/* ---------- Hero ---------- */
.lt-eyebrow {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lt-tag-text);
}
.lt-hero-title {
  max-width: 840px;
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.98;
  color: var(--rt-text);
}
.lt-hero-line { display: block; }
.lt-hero-title .lt-hero-line.lt-hero-accent { color: var(--lt-accent); }
.lt-dot { color: var(--lt-accent); }
.lt-hero-sub {
  margin-top: 28px;
  max-width: 580px;
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--rt-muted);
}

/* ---------- Tags / meta ---------- */
.lt-tag {
  display: inline;
  padding: 0;
  border-radius: 0;
  background: none;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--rt-faint);
  white-space: nowrap;
}

.lt-section-title {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--rt-text);
}

/* ---------- Featured post ---------- */
.lt-featured {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--rt-surface);
  border: 1px solid var(--rt-line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--lt-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.lt-featured:hover {
  transform: translateY(-3px);
  border-color: var(--rt-line-strong);
  box-shadow: var(--lt-shadow-lift);
}
.lt-featured-media {
  height: 260px;
  overflow: hidden;
  background: var(--rt-hover-bg);
}
.lt-featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.lt-featured:hover .lt-featured-media img { transform: scale(1.035); }
.lt-featured-body {
  display: flex;
  flex-direction: column;
  padding: 28px 30px 30px;
}
.lt-featured-title {
  margin: 16px 0 12px;
  font-size: clamp(1.7rem, 2.6vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--rt-text);
  transition: color 0.15s ease;
}
.lt-featured:hover .lt-featured-title { color: var(--lt-tag-text); }
.lt-featured-desc {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--rt-muted);
}
@media (min-width: 900px) {
  .lt-featured { grid-template-columns: 1.05fr 1fr; }
  .lt-featured-media { height: auto; min-height: 430px; }
  .lt-featured-body { padding: 36px 38px 34px; }
}

/* ---------- Byline / arrow ---------- */
.lt-byline {
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.lt-avatar {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--rt-line);
  flex-shrink: 0;
}
.lt-avatar-sm { width: 26px; height: 26px; }
.lt-avatar-stack {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.lt-avatar-stack .lt-avatar:not(:first-child) {
  margin-left: -8px;
  border: 2px solid var(--rt-surface);
}
.lt-avatar-stack-sm .lt-avatar:not(:first-child) {
  margin-left: -7px;
  border-width: 2px;
}
.lt-byline-name {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--rt-text);
  line-height: 1.3;
}
.lt-byline-sub {
  font-size: 11.5px;
  color: var(--rt-faint);
  line-height: 1.3;
}
.lt-arrow {
  margin-left: auto;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--rt-line-strong);
  display: grid;
  place-items: center;
  font-size: 12.5px;
  color: var(--rt-text);
  flex-shrink: 0;
  transition: all 0.2s ease;
}
.lt-arrow-sm { width: 30px; height: 30px; font-size: 11.5px; }
.group:hover .lt-arrow {
  background: var(--lt-accent);
  border-color: var(--lt-accent);
  color: var(--lt-on-accent);
  transform: translateX(3px);
}

/* ---------- Article cards ---------- */
.lt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
@media (min-width: 640px) { .lt-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .lt-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; } }

.lt-card {
  display: flex;
  flex-direction: column;
  background: var(--rt-surface);
  border: 1px solid var(--rt-line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--lt-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.lt-card:hover {
  transform: translateY(-4px);
  border-color: var(--rt-line-strong);
  box-shadow: var(--lt-shadow-lift);
}
.lt-card-link { display: flex; flex-direction: column; height: 100%; }
.lt-card-media {
  height: 200px;
  overflow: hidden;
  background: var(--rt-hover-bg);
  flex-shrink: 0;
}
.lt-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.lt-card:hover .lt-card-media img { transform: scale(1.05); }
.lt-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 22px 20px;
}
.lt-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.lt-card-title {
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--rt-text);
  transition: color 0.15s ease;
}
.lt-card:hover .lt-card-title { color: var(--lt-tag-text); }
.lt-card-desc {
  margin-top: 8px;
  margin-bottom: 18px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--rt-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.lt-card-foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rt-line);
  display: flex;
  align-items: center;
  gap: 9px;
}

.lt-archive-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  color: var(--lt-tag-text);
}
.lt-archive-link i { font-size: 12px; transition: transform 0.18s ease; }
.lt-archive-link:hover i { transform: translateX(3px); }

/* ---------- Scroll reveal ---------- */
.lt-reveal { opacity: 0; transition: opacity 0.55s ease; }
.lt-reveal.is-visible { opacity: 1; }
.lt-rise {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.lt-rise.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .lt-reveal, .lt-rise { opacity: 1; transform: none; transition: none; }
  .lt-featured, .lt-card, .lt-featured-media img, .lt-card-media img, .lt-arrow { transition: none !important; }
}