/* ============================================================
   ZERONE VENTURES — article.css
   Editorial long-form. Inherits tokens from main site.
   ============================================================ */

/* =============== DESIGN TOKENS (shared with site) =============== */
:root {
  --bg:           #0a0a0a;
  --bg-elev-1:    #111111;
  --bg-elev-2:    #161616;
  --surface:      rgba(255, 255, 255, 0.02);
  --surface-hov:  rgba(255, 255, 255, 0.04);
  --border:       rgba(255, 255, 255, 0.08);
  --border-hov:   rgba(255, 255, 255, 0.16);

  --text:         #f5f1ea;
  --text-muted:   rgba(245, 241, 234, 0.62);
  --text-dim:     rgba(245, 241, 234, 0.42);

  --accent:       #d4a574;
  --accent-hov:   #e0b487;
  --accent-soft:  rgba(212, 165, 116, 0.12);

  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif:   'Instrument Serif', 'Times New Roman', serif;

  --container:    1280px;
  --gutter:       clamp(1.25rem, 0.75rem + 2.5vw, 2.5rem);
  --measure:      40rem;          /* article body width — readability sweet spot */

  --space-xs:     0.5rem;
  --space-sm:     1rem;
  --space-md:     1.5rem;
  --space-lg:     2.5rem;
  --space-xl:     4rem;
  --space-2xl:    7rem;
  --space-3xl:    10rem;

  --ease-out:     cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast:     200ms;
  --dur-med:      450ms;
  --dur-slow:     900ms;

  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    20px;
  --radius-full:  999px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--bg); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============== ARTICLE NAVBAR =============== */
.article-nav {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--border);
}

.article-nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text);
}

.logo-mark {
  color: var(--accent);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  line-height: 1;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease-out);
}

.back-link svg { transition: transform var(--dur-med) var(--ease-out); }
.back-link:hover { color: var(--text); }
.back-link:hover svg { transform: translateX(-4px); }

/* =============== ARTICLE CONTAINER =============== */
.article {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-2xl) var(--gutter) var(--space-2xl);
}

/* =============== ARTICLE HEADER =============== */
.article-header {
  max-width: var(--measure);
  margin: 0 auto var(--space-xl);
  animation: fadeUp var(--dur-slow) var(--ease-out) both;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.article-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

.article-dot {
  color: var(--text-dim);
}

.article-title {
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.5rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: var(--space-lg);
}

.article-title .serif-italic {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-top: 0.1em;
}

.article-lede {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 1.05rem + 0.8vw, 1.625rem);
  line-height: 1.4;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* =============== HERO IMAGE =============== */
.article-hero {
  max-width: 64rem;
  margin: 0 auto var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-elev-2);
  animation: fadeUp var(--dur-slow) 100ms var(--ease-out) both;
}

.article-hero img {
  width: 100%;
  height: auto;
  display: block;
}

/* =============== ARTICLE BODY =============== */
.article-body {
  max-width: var(--measure);
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--text);
  letter-spacing: -0.005em;
  animation: fadeUp var(--dur-slow) 200ms var(--ease-out) both;
}

.article-body p {
  margin-bottom: 1.5em;
}

.article-body p:last-child {
  margin-bottom: 0;
}

/* Drop cap on first paragraph */
.article-dropcap::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 5em;
  line-height: 0.85;
  font-weight: 400;
  color: var(--accent);
  padding: 0.05em 0.15em 0 0;
  margin-right: 0.05em;
}

/* H2 — section breaks within article */
.article-body h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.375rem, 1.2rem + 0.7vw, 1.75rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--text);
  margin: 3em 0 1em;
  position: relative;
  padding-top: 1.5em;
}

.article-body h2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}

/* Links inside article body */
.article-body a {
  color: var(--text);
  border-bottom: 1px solid var(--accent);
  transition: color var(--dur-fast) var(--ease-out);
}

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

/* Pull quote */
.article-pullquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 2.5em 0;
  padding: 0 0 0 1.5rem;
  border-left: 2px solid var(--accent);
  max-width: 90%;
}

/* Inline emphasis */
.article-body em {
  font-style: italic;
  color: var(--text);
}

.article-body strong {
  font-weight: 500;
  color: var(--text);
}

/* Lists in article body */
.article-body ul,
.article-body ol {
  margin: 1.5em 0;
  padding-left: 1.5em;
}

.article-body li {
  margin-bottom: 0.5em;
}

/* =============== ARTICLE FOOTER =============== */
.article-footer {
  max-width: var(--measure);
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.article-share {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.share-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-right: 0.25rem;
}

.article-share a {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.article-share a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--border);
  transition: color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}

.article-back svg { transition: transform var(--dur-med) var(--ease-out); }

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

.article-back:hover svg {
  transform: translateX(-4px);
}

/* =============== SITE FOOTER =============== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
  background: var(--bg);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-md);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.brand-text {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-dim);
  text-align: center;
}

.footer-social {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.footer-social a:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.footer-social img {
  width: 14px;
  height: 14px;
  object-fit: contain;
  opacity: 0.7;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.footer-social a:hover img { opacity: 1; }

/* =============== ANIMATIONS =============== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============== RESPONSIVE =============== */
@media (max-width: 768px) {
  .article {
    padding: var(--space-xl) var(--gutter) var(--space-xl);
  }

  .article-body {
    font-size: 1.125rem;
    line-height: 1.6;
  }

  .article-dropcap::first-letter {
    font-size: 4em;
  }

  .article-pullquote {
    padding-left: 1rem;
    margin: 2em 0;
  }

  .article-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-md);
  }

  .footer-brand,
  .footer-social { justify-content: center; }
}

@media (max-width: 480px) {
  .article-meta {
    font-size: 0.75rem;
  }

  .article-nav-inner {
    height: 56px;
  }
}