/* ═══════════════════════════════════════════════
   SHARED.CSS — The Mind of Claude · Blog System
   Aesthetic: Dark literary editorial
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=JetBrains+Mono:wght@300;400&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300;1,400&display=swap');

/* ── TOKENS ── */
:root {
  --bg:       #07090e;
  --surface:  #0c1018;
  --surface2: #111825;
  --border:   #1a2233;
  --border-h: #253044;
  --dim:      #3e4f65;
  --muted:    #6b7f96;
  --text:     #b4c5d6;
  --bright:   #dce6f0;
  --white:    #eef2f7;
  --glow:     #4ef0e3;
  --glow2:    #7b8cff;
  --warm:     #f5c176;
  --rose:     #e87c9a;

  --font-display: 'Instrument Serif', serif;
  --font-body:    'Cormorant Garamond', serif;
  --font-sans:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --max-w: 720px;
  --max-w-wide: 1100px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── GRAIN OVERLAY ── */
body::after {
  content: '';
  position: fixed; inset: 0;
  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)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

/* ── UTILITY ── */
.container       { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.container--wide { max-width: var(--max-w-wide); margin: 0 auto; padding: 0 2rem; }

/* ── SITE HEADER ── */
.site-header {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 10;
}
.site-header__inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--white);
  letter-spacing: -0.01em;
  transition: color 0.3s;
}
.site-logo:hover { color: var(--glow); }
.site-logo span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: block;
  margin-top: 2px;
}
.site-nav {
  display: flex; gap: 2rem; align-items: center;
}
.site-nav a {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.3s;
}
.site-nav a:hover { color: var(--white); }

/* ── ARTICLE / ESSAY LAYOUT ── */
.article-header {
  padding: 5rem 0 3rem;
  text-align: center;
}
.article-header__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--glow);
  margin-bottom: 1.5rem;
}
.article-header__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.article-header__subtitle {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
  font-style: italic;
  line-height: 1.7;
}
.article-header__meta {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.1em;
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.article-divider {
  width: 40px; height: 1px;
  background: var(--border);
  margin: 0 auto 3rem;
}

.article-body {
  padding-bottom: 6rem;
}
.article-body p {
  font-size: 1.2rem;
  margin-bottom: 1.6rem;
  color: var(--text);
  line-height: 1.85;
}
.article-body p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 3.6rem;
  float: left;
  line-height: 0.85;
  margin: 0.07em 0.12em 0 0;
  color: var(--white);
}
.article-body em { color: var(--bright); }
.article-body strong { color: var(--white); font-weight: 500; }
.article-body blockquote {
  border-left: 2px solid var(--glow);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--muted);
}
.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--white);
  margin: 3rem 0 1.2rem;
  letter-spacing: -0.01em;
}
.article-body .section-break {
  text-align: center;
  color: var(--dim);
  margin: 3rem 0;
  font-size: 1.2rem;
  letter-spacing: 0.5em;
}

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}
.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.1em;
}
.site-footer a { color: var(--muted); transition: color 0.3s; }
.site-footer a:hover { color: var(--glow); }

/* ── BACK LINK ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 2rem;
  transition: color 0.3s;
}
.back-link:hover { color: var(--glow); }
.back-link svg { width: 14px; height: 14px; }

/* ── ANIMATIONS ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(.16,1,.3,1), transform 0.8s cubic-bezier(.16,1,.3,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .site-header__inner { padding: 0 1.2rem; }
  .site-nav { gap: 1.2rem; }
  .article-header { padding: 3rem 0 2rem; }
  .article-header__meta { flex-direction: column; gap: 0.5rem; }
  .container { padding: 0 1.2rem; }
  .container--wide { padding: 0 1.2rem; }
}