/* ============================================
   blog.crawley.systems — Blog Theme
   Based on crawley.systems Industrial Editorial
   ============================================ */

:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-elevated: #18181b;
  --bg-card: #141416;
  --border: #27272a;
  --border-subtle: #1e1e21;

  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --accent: #f59e0b;
  --accent-dim: #b45309;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --accent-glow-strong: rgba(245, 158, 11, 0.3);

  --term-green: #22c55e;
  --term-blue: #60a5fa;
  --term-red: #ef4444;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --section-pad: clamp(80px, 10vw, 140px);
  --container: 1200px;
  --article-width: 760px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ============ NAVIGATION ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 clamp(20px, 4vw, 48px);
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}

.nav--scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-subtle);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  transition: color 0.3s;
}

.nav__logo-bracket { color: var(--text-muted); font-weight: 300; }
.nav__logo-dot { color: var(--accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  transition: color 0.3s;
}

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

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 120px clamp(20px, 4vw, 48px) 60px;
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 158, 11, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 158, 11, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
}

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

.hero__content {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.hero__label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}

.hero__label-dot {
  width: 8px; height: 8px;
  background: var(--term-green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.hero__title-line {
  display: block;
  opacity: 0;
  animation: fadeUp 0.8s forwards;
}

.hero__title-line--1 { animation-delay: 0.3s; }
.hero__title-line--2 { animation-delay: 0.45s; color: var(--text-secondary); }
.hero__title-line--3 { animation-delay: 0.6s; }

.hero__title-cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero__sub {
  max-width: 580px;
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

/* ============ SECTION UTILITIES ============ */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

/* ============ POST LIST ============ */
.posts {
  padding: 60px clamp(20px, 4vw, 48px) var(--section-pad);
  border-top: 1px solid var(--border);
}

.posts__inner {
  max-width: var(--container);
  margin: 0 auto;
}

.post-card {
  display: block;
  padding: 36px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 24px;
  transition: background 0.4s, border-color 0.4s;
  position: relative;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.post-card:hover {
  background: var(--bg-elevated);
  border-color: var(--border);
}

.post-card:hover::before { width: 100%; }

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.post-card__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.post-card__tags {
  display: flex;
  gap: 6px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  letter-spacing: 0.02em;
}

.post-card:hover .tag {
  border-color: var(--accent-dim);
  color: var(--text-secondary);
}

.post-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 12px;
}

.post-card__excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 800px;
}

.post-card__read {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  transition: color 0.3s;
}

.post-card:hover .post-card__read { color: #fbbf24; }

/* ============ ARTICLE ============ */
.article-hero {
  padding: 140px clamp(20px, 4vw, 48px) 60px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.article-hero .hero__grid-bg,
.article-hero .hero__noise {
  position: absolute;
  inset: 0;
}

.article-hero__inner {
  position: relative;
  max-width: var(--article-width);
  margin: 0 auto;
}

.article-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  transition: color 0.3s;
}

.article-hero__back:hover { color: var(--accent); }

.article-hero__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.article-hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

/* Article body */
.article-body {
  padding: 60px clamp(20px, 4vw, 48px) var(--section-pad);
}

.article-body__inner {
  max-width: var(--article-width);
  margin: 0 auto;
}

.article-body p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 24px;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  margin-top: 56px;
  margin-bottom: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.article-body h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-body a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color 0.3s;
}

.article-body a:hover { border-color: var(--accent); }

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-body em {
  color: var(--text-secondary);
  font-style: italic;
}

.article-body ul,
.article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
  list-style: disc;
}

.article-body ol { list-style: decimal; }

.article-body li {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 8px;
}

.article-body li::marker {
  color: var(--accent-dim);
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--bg-secondary);
  border-radius: 0 6px 6px 0;
}

.article-body blockquote p {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Code blocks */
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-elevated);
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid var(--border-subtle);
  color: var(--accent);
}

.article-body pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin: 32px 0;
  overflow-x: auto;
  position: relative;
}

.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.code-label {
  position: absolute;
  top: 0; right: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  padding: 6px 12px;
  background: var(--bg-elevated);
  border-bottom-left-radius: 6px;
  border: 1px solid var(--border);
  border-top: none;
  border-right: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Callout boxes */
.callout {
  padding: 24px 28px;
  margin: 32px 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.callout--warning {
  background: rgba(245, 158, 11, 0.06);
  border-color: var(--accent-dim);
}

.callout--danger {
  background: rgba(239, 68, 68, 0.06);
  border-color: var(--term-red);
}

.callout--info {
  background: rgba(96, 165, 250, 0.06);
  border-color: var(--term-blue);
}

.callout__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.callout--warning .callout__title { color: var(--accent); }
.callout--danger .callout__title { color: var(--term-red); }
.callout--info .callout__title { color: var(--term-blue); }

.callout p {
  font-size: 0.95rem !important;
  margin-bottom: 0 !important;
}

/* Timeline table */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 0.9rem;
}

.article-body th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  padding: 10px 16px;
  border-bottom: 2px solid var(--border);
  background: var(--bg-secondary);
}

.article-body td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.article-body tr:hover td {
  background: var(--bg-card);
}

/* Separator */
.article-body hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 48px 0;
}

/* Author section */
.article-author {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 20px;
  align-items: center;
}

.article-author__avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
}

.article-author__info h4 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.article-author__info p {
  font-size: 0.88rem !important;
  color: var(--text-muted) !important;
  margin-bottom: 0 !important;
}

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px clamp(20px, 4vw, 48px);
}

.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ============ ANIMATIONS ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 600px) {
  .nav__links a:not(:last-child) { display: none; }

  .post-card { padding: 24px 20px; }
  .post-card__title { font-size: 1.2rem; }

  .article-hero { padding-top: 100px; }
  .article-body pre { padding: 16px; margin-left: -20px; margin-right: -20px; border-radius: 0; }
}

/* ============ SELECTION ============ */
::selection { background: var(--accent); color: var(--bg-primary); }

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }