/* ══════════════════════════════════════════
   Blog Index — Swiss / International Style
══════════════════════════════════════════ */
:root {
  --bg:      #f7f5f2;
  --surface: #ffffff;
  --border:  #e0dbd4;
  --border2: #ccc6bc;
  --red:     #c0392b;
  --fg:      #1a1612;
  --fg2:     #5a5048;
  --fg3:     #9a8e84;
  --sans:    -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --mono:    'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --wrap:    min(80vw, 1400px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,245,242,.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.site-logo {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.03em;
  text-decoration: none;
  background: linear-gradient(135deg, var(--fg) 40%, var(--red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header-tagline {
  font-size: 11px;
  font-family: var(--mono);
  color: var(--fg3);
  letter-spacing: .05em;
  text-transform: uppercase;
  border-left: 1px solid var(--border2);
  padding-left: 18px;
}

/* ── Masthead ── */
.masthead {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 64px 24px 48px;
  border-bottom: 3px double var(--border2);
}
.masthead-kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 16px;
}
.masthead-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.0;
  color: var(--fg);
}
.masthead-title span { color: var(--red); }
.masthead-desc {
  margin-top: 18px;
  font-size: .97rem;
  color: var(--fg2);
  max-width: 500px;
  line-height: 1.8;
  border-left: 3px solid var(--red);
  padding-left: 14px;
}
.masthead-meta {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg3);
}
.masthead-meta span { color: var(--fg2); font-weight: 700; }

/* ── Main ── */
.main-wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 80px;
}

.section-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--fg3);
  padding: 32px 0 12px;
  border-bottom: 1px solid var(--border);
}

/* ── Post list ── */
.post-list { list-style: none; }

.post-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}
.post-item:hover .post-title-link { color: var(--red); }

.post-num {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--fg3);
  letter-spacing: .04em;
  padding-top: 4px;
  text-align: right;
  user-select: none;
}

.post-body { min-width: 0; }

.post-category-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: 2px;
  padding: 1px 6px;
  margin-bottom: 8px;
}

.post-title-link {
  display: block;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--fg);
  text-decoration: none;
  line-height: 1.35;
  margin-bottom: 8px;
  transition: color .15s;
}

.post-excerpt {
  font-size: .855rem;
  color: var(--fg2);
  line-height: 1.75;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--fg3);
}
.post-footer-meta .tag {
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: 2px;
  padding: 1px 6px;
  color: var(--fg2);
}
.post-read-link {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s;
}
.post-read-link:hover { border-color: var(--red); }

/* ── Empty state ── */
.post-empty {
  padding: 48px 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--fg3);
  text-align: center;
}

/* ── Responsive ── */
@media (max-width: 540px) {
  .masthead { padding: 40px 16px 32px; }
  .masthead-title { font-size: 2.1rem; }
  .header-tagline { display: none; }
  .main-wrap { padding: 0 16px 60px; }
  .header-inner { padding: 0 16px; }
}