/* ========================================
   SERPENTIA - Snake Knowledge Blog
   Clean modern blog aesthetic
   ======================================== */

:root {
  --bg: #fafaf7;
  --bg-alt: #f1f0ea;
  --ink: #1a1f1a;
  --ink-soft: #4a544a;
  --ink-mute: #8a908a;
  --accent: #2d5016;
  --accent-soft: #6b8e4e;
  --accent-warm: #c8902d;
  --line: #e3e1d8;
  --danger: #a93226;
  --shadow-sm: 0 1px 2px rgba(26,31,26,0.04), 0 1px 1px rgba(26,31,26,0.03);
  --shadow-md: 0 4px 12px rgba(26,31,26,0.06), 0 2px 4px rgba(26,31,26,0.04);
  --shadow-lg: 0 12px 32px rgba(26,31,26,0.08), 0 4px 8px rgba(26,31,26,0.04);
  --radius: 4px;
  --radius-lg: 8px;
  --container: 1180px;
  --reading: 720px;
}

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

html { scroll-behavior: smooth; }

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

h1, h2, h3, h4, h5, h6 {
  font-family: 'Fraunces', 'Playfair Display', Georgia, serif;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover { color: var(--accent-warm); }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ HEADER ============ */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(250, 250, 247, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.logo {
  font-family: 'Fraunces', serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.logo-tag {
  font-family: 'Source Serif 4', serif;
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 400;
  margin-top: 2px;
}

.main-nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  color: var(--ink-soft);
  font-family: 'Source Serif 4', serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: 4px 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-warm);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 24px;
  cursor: pointer;
  color: var(--ink);
}

/* ============ HERO ============ */
.hero {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}

.hero-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.hero-eyebrow {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 18px;
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(36px, 5.5vw, 64px);
  line-height: 1.08;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}

.hero-sub {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.55;
}

.hero-meta {
  display: inline-flex;
  gap: 24px;
  font-family: 'Source Serif 4', serif;
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-meta span::before {
  content: '•';
  margin-right: 24px;
  color: var(--accent-warm);
}

.hero-meta span:first-child::before { display: none; }

/* ============ AD SLOTS ============ */
.ad-slot {
  margin: 40px auto;
  padding: 20px;
  background: var(--bg-alt);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-mute);
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  max-width: var(--container);
}

.ad-slot.ad-banner { min-height: 120px; }
.ad-slot.ad-rectangle { min-height: 280px; max-width: 336px; }
.ad-slot.ad-leaderboard { min-height: 100px; }
.ad-slot.ad-in-article { margin: 48px auto; max-width: var(--reading); }

/* ============ CATEGORIES STRIP ============ */
.cat-strip {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.cat-title {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 20px;
  text-align: center;
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.cat-card {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.25s ease;
  color: var(--ink);
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-soft);
  color: var(--ink);
}

.cat-icon {
  font-size: 32px;
  margin-bottom: 8px;
  display: block;
}

.cat-name {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 17px;
  margin-bottom: 4px;
}

.cat-count {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============ SECTION HEADING ============ */
.section-head {
  text-align: center;
  margin: 60px 0 40px;
}

.section-head .eyebrow {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 10px;
  font-weight: 600;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 auto;
}

/* ============ POSTS GRID ============ */
.posts-section { padding: 30px 0 80px; }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.post-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.post-card:hover { transform: translateY(-4px); }

.post-thumb {
  height: 220px;
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--accent) 100%);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: rgba(255,255,255,0.4);
}

.post-thumb.t1 { background: linear-gradient(135deg, #6b8e4e 0%, #2d5016 100%); }
.post-thumb.t2 { background: linear-gradient(135deg, #c8902d 0%, #8a5a12 100%); }
.post-thumb.t3 { background: linear-gradient(135deg, #4a5d3a 0%, #1a2914 100%); }
.post-thumb.t4 { background: linear-gradient(135deg, #a9956b 0%, #6b5a3a 100%); }
.post-thumb.t5 { background: linear-gradient(135deg, #5a7a5a 0%, #2a4a2a 100%); }
.post-thumb.t6 { background: linear-gradient(135deg, #8a6a4a 0%, #4a3a2a 100%); }
.post-thumb.t7 { background: linear-gradient(135deg, #7a8a5a 0%, #3a4a2a 100%); }
.post-thumb.t8 { background: linear-gradient(135deg, #a93226 0%, #6a1a14 100%); }
.post-thumb.t9 { background: linear-gradient(135deg, #4a5d7a 0%, #1a2a4a 100%); }

.post-thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), transparent 60%);
}

.post-category {
  font-family: 'Source Serif 4', serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin: 20px 0 8px;
  font-weight: 600;
}

.post-title {
  font-size: 22px;
  line-height: 1.3;
  margin-bottom: 12px;
  font-weight: 600;
}

.post-title a { color: var(--ink); }
.post-title a:hover { color: var(--accent); }

.post-excerpt {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 14px;
}

.post-meta {
  font-family: 'Source Serif 4', serif;
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
}

.post-meta span + span::before {
  content: ' · ';
  margin: 0 6px;
}

/* ============ FEATURED POST ============ */
.featured-post {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 60px;
  padding: 40px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
}

.featured-thumb {
  height: 360px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #2d5016 0%, #1a2914 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  color: rgba(255,255,255,0.35);
}

.featured-thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(200,144,45,0.25), transparent 50%);
}

.featured-label {
  font-family: 'Source Serif 4', serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-warm);
  font-weight: 700;
  margin-bottom: 14px;
}

.featured-post h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  line-height: 1.2;
  margin-bottom: 16px;
}

.featured-post h2 a { color: var(--ink); }

.featured-excerpt {
  color: var(--ink-soft);
  font-size: 17px;
  margin-bottom: 20px;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Source Serif 4', serif;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
}

.read-more::after {
  content: '→';
  transition: transform 0.2s ease;
}

.read-more:hover::after { transform: translateX(4px); }

/* ============ ARTICLE PAGE ============ */
.article-page {
  padding: 60px 0 80px;
}

.article-header {
  max-width: var(--reading);
  margin: 0 auto 40px;
  text-align: center;
}

.article-category {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-warm);
  font-weight: 600;
  margin-bottom: 14px;
}

.article-header h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
  margin-bottom: 20px;
}

.article-meta {
  font-family: 'Source Serif 4', serif;
  font-size: 14px;
  color: var(--ink-mute);
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.article-meta span + span::before {
  content: '•';
  margin-right: 20px;
  color: var(--accent-warm);
}

.article-hero {
  max-width: 960px;
  margin: 0 auto 48px;
  height: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 140px;
  color: rgba(255,255,255,0.3);
}

.article-body {
  max-width: var(--reading);
  margin: 0 auto;
  font-size: 19px;
  line-height: 1.8;
  color: var(--ink);
}

.article-body > * + * { margin-top: 1.25em; }

.article-body p:first-child::first-letter {
  font-family: 'Fraunces', serif;
  font-size: 64px;
  font-weight: 700;
  line-height: 0.9;
  float: left;
  margin: 8px 12px 0 0;
  color: var(--accent);
}

.article-body h2 {
  font-size: 30px;
  margin-top: 2em !important;
  margin-bottom: 0.5em;
  padding-top: 0.5em;
  border-top: 2px solid var(--line);
}

.article-body h3 {
  font-size: 22px;
  margin-top: 1.5em !important;
  color: var(--accent);
}

.article-body ul, .article-body ol {
  padding-left: 28px;
  color: var(--ink);
}

.article-body li { margin-bottom: 8px; }

.article-body blockquote {
  border-left: 4px solid var(--accent-warm);
  padding: 4px 0 4px 24px;
  margin: 32px 0;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 20px;
}

.article-body .callout {
  background: var(--bg-alt);
  border-left: 4px solid var(--accent);
  padding: 20px 24px;
  margin: 32px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-body .callout.warning {
  background: #fdf3ee;
  border-left-color: var(--danger);
}

.article-body .callout strong {
  display: block;
  font-family: 'Fraunces', serif;
  font-size: 18px;
  margin-bottom: 6px;
  color: var(--accent);
}

.article-body .callout.warning strong { color: var(--danger); }

/* ============ STATIC PAGE ============ */
.page-content {
  max-width: var(--reading);
  margin: 60px auto;
  padding: 0 24px;
}

.page-content h1 {
  font-size: clamp(32px, 4.5vw, 48px);
  margin-bottom: 16px;
  text-align: center;
}

.page-content .lede {
  font-size: 19px;
  color: var(--ink-soft);
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.page-content h2 {
  font-size: 26px;
  margin-top: 40px;
  margin-bottom: 14px;
  color: var(--accent);
}

.page-content h3 {
  font-size: 19px;
  margin-top: 24px;
  margin-bottom: 10px;
}

.page-content p { margin-bottom: 16px; }
.page-content ul, .page-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.page-content li { margin-bottom: 6px; }

/* ============ CONTACT FORM ============ */
.contact-form {
  background: var(--bg-alt);
  padding: 32px;
  border-radius: var(--radius-lg);
  margin-top: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-field { margin-bottom: 20px; }

.form-field label {
  display: block;
  font-family: 'Source Serif 4', serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: inherit;
  font-size: 16px;
  color: var(--ink);
  transition: border-color 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-field textarea {
  resize: vertical;
  min-height: 140px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: var(--radius);
  font-family: 'Source Serif 4', serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  background: var(--accent-warm);
  color: white;
  transform: translateY(-1px);
}

/* ============ NEWSLETTER ============ */
.newsletter {
  background: var(--accent);
  color: var(--bg);
  padding: 60px 40px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin: 60px 0;
}

.newsletter h3 {
  color: var(--bg);
  font-size: clamp(26px, 3.5vw, 34px);
  margin-bottom: 10px;
}

.newsletter p {
  color: rgba(250,250,247,0.85);
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  max-width: 480px;
  margin: 0 auto;
  gap: 10px;
}

.newsletter-form input {
  flex: 1;
  padding: 14px 16px;
  border: 0;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 16px;
}

.newsletter-form button {
  background: var(--accent-warm);
  border: 0;
  padding: 14px 28px;
  color: white;
  font-family: 'Source Serif 4', serif;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 13px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease;
}

.newsletter-form button:hover { background: #a8761f; }

/* ============ FOOTER ============ */
.site-footer {
  background: #14180f;
  color: #9ca196;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: var(--bg);
  font-family: 'Fraunces', serif;
  font-size: 24px;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.6;
  max-width: 340px;
}

.footer-col h4 {
  color: var(--bg);
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
}

.footer-col li { margin-bottom: 8px; }

.footer-col a {
  color: #9ca196;
  font-size: 15px;
}

.footer-col a:hover { color: var(--accent-warm); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-post { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
  .featured-thumb { height: 260px; font-size: 80px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 17px; }
  .hero { padding: 48px 0 40px; }
  .posts-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .main-nav.open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 20px;
  }
  .main-nav.open ul { flex-direction: column; gap: 16px; }
  .menu-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
  .article-hero { height: 240px; font-size: 80px; }
  .article-body p:first-child::first-letter { font-size: 48px; }
}