/* ──── brolio.dev/writing — Shared Styles ──── */

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

:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --text-primary: #e8e6e3;
  --text-dim: #6b6979;
  --accent: #64ffda;
  --accent-secondary: #7c5cfc;
  --accent-warm: #ff6b6b;
  --glow: rgba(100, 255, 218, 0.08);

  --writing-max-width: 680px;
  --writing-sidebar-width: 280px;
  --writing-gap: 80px;
  --writing-prose-spacing: 1.8em;
  --progress-height: 3px;
}

html {
  background: var(--bg);
}

html, body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ──── Fixed Layer Stack ──── */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: var(--progress-height);
  width: 0;
  background: var(--accent);
  z-index: 100;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(100, 255, 218, 0.4);
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.03;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.5) 100%);
}

/* ──── Two-Column Layout ──── */

.writing-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr var(--writing-sidebar-width);
  gap: var(--writing-gap);
  max-width: calc(var(--writing-max-width) + var(--writing-gap) + var(--writing-sidebar-width));
  margin: 0 auto;
  padding: 60px 40px 80px;
}

.writing-main {
  min-width: 0;
}

.writing-sidebar {
  position: sticky;
  top: 40px;
  align-self: start;
}

/* ──── Article Header ──── */

.writing-article-header {
  margin-bottom: 2.5rem;
}

.writing-article-header h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.writing-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.writing-meta time {
  color: var(--text-dim);
}

.reading-time {
  color: var(--text-dim);
  opacity: 0.7;
}

.writing-meta .reading-time::before {
  content: '\00B7';
  margin-right: 1rem;
}

/* ──── Article Content ──── */

.writing-article-content {
  max-width: var(--writing-max-width);
}

.writing-article-content p {
  margin-bottom: var(--writing-prose-spacing);
}

.writing-article-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.writing-article-content a:hover {
  border-bottom-color: var(--accent);
}

.writing-article-content h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.6rem;
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.writing-article-content h3 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.writing-article-content ul,
.writing-article-content ol {
  margin-bottom: var(--writing-prose-spacing);
  padding-left: 1.5rem;
}

.writing-article-content li {
  margin-bottom: 0.5rem;
}

.writing-article-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  color: var(--text-dim);
  font-style: italic;
  background: rgba(100, 255, 218, 0.03);
  border-radius: 0 4px 4px 0;
}

.writing-article-content code {
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  background: var(--surface);
  border-radius: 3px;
  color: var(--accent);
}

.writing-article-content pre {
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--surface);
  border: 1px solid rgba(100, 255, 218, 0.08);
  border-radius: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.writing-article-content pre code {
  padding: 0;
  background: none;
  border-radius: 0;
  font-size: inherit;
  color: var(--text-primary);
}

.writing-article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
}

.writing-article-content hr {
  border: none;
  border-top: 1px solid rgba(100, 255, 218, 0.1);
  margin: 2.5rem 0;
}

/* ──── Back Navigation ──── */

.writing-back {
  display: flex;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(100, 255, 218, 0.08);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.85rem;
}

.writing-back a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.writing-back a:hover {
  color: var(--accent);
}

/* ──── Sidebar ──── */

.writing-sidebar__nav h3 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.writing-sidebar__list {
  list-style: none;
}

.writing-sidebar__item {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(100, 255, 218, 0.05);
}

.writing-sidebar__item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.writing-sidebar__item a {
  display: block;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.9rem;
  color: var(--text-dim);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s ease;
}

.writing-sidebar__item a:hover {
  color: var(--text-primary);
}

.writing-sidebar__item--current a {
  color: var(--accent);
}

.writing-sidebar__item time {
  display: block;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.75rem;
  color: var(--text-dim);
  opacity: 0.6;
  margin-top: 0.25rem;
}

/* ──── Sidebar Mobile Toggle ──── */

.writing-sidebar__toggle {
  display: none;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid rgba(100, 255, 218, 0.1);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.85rem;
  cursor: pointer;
  text-align: left;
  margin-bottom: 1rem;
  transition: border-color 0.2s ease;
}

.writing-sidebar__toggle:hover {
  border-color: rgba(100, 255, 218, 0.3);
}

/* ──── Archive Page ──── */

.writing-section-header {
  margin-bottom: 3rem;
}

.writing-section-header h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.writing-section-header p {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  color: var(--text-dim);
}

.writing-archive__list {
  list-style: none;
}

.writing-archive__item {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(100, 255, 218, 0.06);
}

.writing-archive__item:first-child {
  padding-top: 0;
}

.writing-archive__item article h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  line-height: 1.35;
}

.writing-archive__item article h2 a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.writing-archive__item article h2 a:hover {
  color: var(--accent);
}

.writing-archive__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.writing-archive__excerpt {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ──── Empty State ──── */

.writing-empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-dim);
}

.writing-empty p {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.95rem;
}

/* ──── Responsive: 640px–1039px ──── */

@media (max-width: 1039px) {
  .writing-layout {
    grid-template-columns: 1fr;
    padding: 40px 30px 60px;
  }

  .writing-sidebar {
    position: static;
    order: -1;
  }

  .writing-sidebar__toggle {
    display: block;
  }

  .writing-sidebar__nav {
    display: none;
  }

  .writing-sidebar--open .writing-sidebar__nav {
    display: block;
  }

  .writing-sidebar__nav h3 {
    display: none;
  }
}

/* ──── Responsive: <=640px ──── */

@media (max-width: 640px) {
  .writing-article-header h1,
  .writing-section-header h1 {
    font-size: 1.75rem;
  }

  .writing-layout {
    padding: 30px 20px 50px;
  }

  .writing-article-content h2 {
    font-size: 1.35rem;
  }

  .writing-article-content h3 {
    font-size: 1.1rem;
  }
}

/* ──── Responsive: <=480px ──── */

@media (max-width: 480px) {
  .writing-layout {
    padding: 20px 16px 40px;
  }

  .writing-article-header h1,
  .writing-section-header h1 {
    font-size: 1.5rem;
  }

  .writing-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .writing-meta .reading-time::before {
    content: '';
    margin-right: 0;
  }

  .writing-back {
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* ──── Print Styles ──── */

@media print {
  .reading-progress,
  .noise,
  .vignette,
  .writing-sidebar,
  .writing-sidebar__toggle {
    display: none !important;
  }

  html, body {
    background: #fff;
    color: #000;
  }

  .writing-layout {
    display: block;
    max-width: 100%;
    padding: 0;
  }

  .writing-article-content a {
    color: #000;
    text-decoration: underline;
  }

  .writing-article-content pre {
    border: 1px solid #ccc;
    background: #f5f5f5;
  }

  .writing-article-content blockquote {
    border-left-color: #666;
    background: none;
  }
}