/* =====================================================
   BLOG — Warm Terminal
   Inherits: ../css/theme.css (CSS variables only)
   All structural styles are self-contained here.
   ===================================================== */

/* Reset */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  height: auto;
  overflow: auto;
}

body {
  background: var(--bg-fallback);
  color: var(--ink);
  font-family: var(--font-sans);
}

/* ===================== */
/* HEADER                */
/* ===================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 22px 0;
  background: transparent;
  z-index: 10;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  opacity: 0.65;
  transition: opacity 0.2s;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  opacity: 1;
}

/* ===================== */
/* DOTS CANVAS           */
/* ===================== */

#dots {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 0;
}

@media (prefers-reduced-motion: reduce) {
  #dots { display: none; }
}

/* ===================== */
/* SHELL                 */
/* ===================== */

.blog-shell {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  padding: 96px 24px 80px; /* top clears the fixed header */
  min-height: 100vh;
}

/* ===================== */
/* TWO-COLUMN LAYOUT     */
/* ===================== */

.blog-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
  transition: grid-template-columns 0.2s ease;
}

.blog-layout.collapsed {
  grid-template-columns: 44px 1fr;
}

/* ===================== */
/* SIDEBAR               */
/* ===================== */

.blog-left {
  position: sticky;
  top: 24px;
  border: 1px solid rgba(233, 229, 220, 0.08);
  border-radius: 6px;
  padding: 12px;
  background: rgba(233, 229, 220, 0.02);
}

.sidebar-handle {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.blog-layout.collapsed .sidebar-handle {
  justify-content: center;
  margin-bottom: 0;
}

.blog-layout.collapsed .sidebar-content {
  display: none;
}

.blog-layout.collapsed .blog-left {
  padding: 8px;
}

#toggleSidebar {
  background: none;
  border: 1px solid rgba(233, 229, 220, 0.15);
  border-radius: 3px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
  padding: 3px 9px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

#toggleSidebar:hover {
  opacity: 1;
}

.sidebar-label {
  max-width: 100%;
  margin: 0 0 12px;
  padding: 0 4px;
  font-size: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
}

.series-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.series-list li {
  margin: 0;
}

.series-item {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.45;
  padding: 7px 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  border-radius: 0 3px 3px 0;
}

.series-item:hover {
  color: var(--ink);
  border-left-color: rgba(233, 229, 220, 0.25);
}

.series-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ===================== */
/* CONTENT VIEWER        */
/* ===================== */

.blog-right {
  max-width: 68ch;
  padding-bottom: 80px;
}

.placeholder {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 14px;
}

/* Post typography */
#viewer {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.82;
  color: color-mix(in srgb, var(--ink) 90%, var(--muted));
}

#viewer h1 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(233, 229, 220, 0.1);
}

#viewer h2 {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 2.5rem 0 0.75rem;
}

#viewer h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
  margin: 2rem 0 0.5rem;
}

#viewer ul {
  padding-left: 1.25rem;
  margin: 0.75rem 0 1rem;
}

#viewer li {
  margin-bottom: 0.4rem;
  color: color-mix(in srgb, var(--ink) 85%, var(--muted));
}

#viewer strong {
  color: var(--ink);
  font-weight: 600;
}

#viewer em {
  font-style: italic;
  color: color-mix(in srgb, var(--ink) 85%, var(--muted));
}

/* ===================== */
/* RESPONSIVE            */
/* ===================== */

@media (max-width: 680px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }

  .blog-left {
    position: static;
  }

  .blog-layout.collapsed {
    grid-template-columns: 1fr;
  }
}