/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #c9b99a;
  --sidebar-bg:  #bfad92;
  --surface:     #d4c8b0;
  --ink:         #1c1008;
  --ink-soft:    #3a2818;
  --ink-muted:   #7a6a56;
  --ink-dim:     #a8987e;
  --accent:      #5c3318;
  --accent-dim:  #7a5030;
  --border:      #ae9e82;
  --font-serif:  'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-sans:   'Inter', 'PingFang SC', 'Helvetica Neue', sans-serif;
  --sidebar-w:   300px;
  --transition:  0.2s ease;
}

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  height: 100vh;
  overflow: hidden;
  display: flex;
}

a { color: inherit; text-decoration: none; }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 2rem 1.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.site-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}

.bio-tagline {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  font-style: italic;
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.bio-lines {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1rem;
}

.bio-line {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
  transition: color var(--transition);
}
.social-link:hover { color: var(--accent); }
.social-link svg { width: 13px; height: 13px; }


/* ===== Video section (bottom of sidebar) ===== */
.sidebar-video {
  flex-shrink: 0;
  padding: 1rem 0 1.75rem;
  border-top: 1px solid var(--border);
}

/* ===== Article List ===== */
.sidebar-articles {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
}
.sidebar-articles::-webkit-scrollbar { width: 4px; }
.sidebar-articles::-webkit-scrollbar-track { background: transparent; }
.sidebar-articles::-webkit-scrollbar-thumb { background: var(--ink-dim); border-radius: 2px; }

.articles-section-label {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--ink);
  padding: 0 1.75rem;
  margin-bottom: 0.5rem;
}

.article-item {
  padding: 0.9rem 1.75rem;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: all var(--transition);
}
.article-item:hover {
  background: var(--surface);
  border-left-color: var(--accent-dim);
}
.article-item.active {
  background: var(--surface);
  border-left-color: var(--accent);
}

.article-item-tag {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.article-item.active .article-item-tag { color: var(--accent); }

.article-item-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 0.3rem;
}
.article-item.active .article-item-title { color: var(--ink); }

.article-item-date {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

/* ===== Main Content ===== */
.main {
  flex: 1;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  justify-content: center;
}
.main::-webkit-scrollbar { width: 6px; }
.main::-webkit-scrollbar-track { background: transparent; }
.main::-webkit-scrollbar-thumb { background: var(--ink-dim); border-radius: 3px; }

.article-view {
  width: 100%;
  max-width: 680px;
  padding: 5rem 3rem 6rem;
  display: none;
}
.article-view.active { display: block; }

.article-view-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.article-view-tag {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.article-view-date {
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.article-view h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.article-lead {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-soft);
  font-style: italic;
  line-height: 1.85;
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.25rem;
  margin-bottom: 2.5rem;
}

.article-body {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-soft);
  line-height: 2;
}
.article-body p + p { margin-top: 1.4rem; }
.article-body h2 {
  font-size: 1.15rem;
  color: var(--ink);
  margin: 2.5rem 0 1rem;
  font-weight: 700;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  body { flex-direction: column; overflow: auto; height: auto; }
  .sidebar {
    width: 100%; min-width: 0;
    height: auto; border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-articles { max-height: 260px; }
  .main { height: auto; }
  .article-view { padding: 2.5rem 1.5rem 4rem; }
}