/*
Theme Name: Implant Info Theme
Template: twentytwentyfive
Description: Premium dental implant information platform theme
Version: 1.0
*/

:root {
  --color-primary: #1B3A5C;
  --color-primary-light: #2A5A8C;
  --color-accent: #3D8B7A;
  --color-accent-light: #4DA894;
  --color-bg: #FAFBFC;
  --color-bg-alt: #F0F4F8;
  --color-surface: #FFFFFF;
  --color-text: #2D3748;
  --color-text-light: #718096;
  --color-text-muted: #A0AEC0;
  --color-border: #E2E8F0;
  --color-border-light: #EDF2F7;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl: 0 12px 48px rgba(0,0,0,0.12);
  --font-heading: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-body: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;
  --content-width: 780px;
  --wide-width: 1200px;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Hide WP admin bar on front */
#wpadminbar { display: none !important; }
html { margin-top: 0 !important; }

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow 0.2s;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-primary);
}
.site-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}
.site-logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}
.main-nav { display: flex; align-items: center; gap: 0; }
.main-nav a {
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}
.main-nav a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: 0.2s;
  border-radius: 2px;
}

/* ===== CONTENT AREA ===== */
.content-wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}
.wide-wrap {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ===== SINGLE POST ===== */
.single-post-hero {
  position: relative;
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  margin-bottom: var(--space-3xl);
}
.single-post-hero img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}
.single-post-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(transparent, rgba(27,58,92,0.7));
}
.single-post-title-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2xl) var(--space-xl);
  z-index: 2;
}
.single-post-title-overlay h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.single-post-meta {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
}

article.post-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-3xl);
}
article.post-content h2 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: var(--space-3xl) 0 var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-accent);
  letter-spacing: -0.02em;
  line-height: 1.35;
}
article.post-content h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin: var(--space-2xl) 0 var(--space-md);
  letter-spacing: -0.01em;
}
article.post-content p {
  margin-bottom: var(--space-lg);
  line-height: 1.8;
  color: var(--color-text);
  word-break: keep-all;
}
article.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-xl) 0;
  box-shadow: var(--shadow-sm);
}
article.post-content ul, article.post-content ol {
  margin: var(--space-md) 0 var(--space-lg) var(--space-lg);
  line-height: 1.8;
}
article.post-content li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-xs);
}
article.post-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: var(--space-xl) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  font-size: 0.92rem;
}
article.post-content thead th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  font-size: 0.88rem;
  letter-spacing: 0.01em;
}
article.post-content tbody td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: top;
}
article.post-content tbody tr:last-child td { border-bottom: none; }
article.post-content tbody tr:nth-child(even) { background: var(--color-bg-alt); }
article.post-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-alt);
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: normal;
  color: var(--color-primary);
  font-weight: 500;
}
article.post-content .info-callout {
  background: linear-gradient(135deg, #f0f9ff 0%, #e8f4fd 100%);
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
}
article.post-content .info-callout strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-sm);
}

/* Legal / AI notices */
.legal-notice, .ai-notice {
  font-size: 0.85em !important;
  line-height: 1.6;
}
.affiliate-notice {
  font-size: 0.9em !important;
}

/* ===== RELATED POSTS ===== */
.related-posts {
  max-width: var(--content-width);
  margin: 0 auto var(--space-3xl);
  padding: 0 var(--space-lg);
}
.related-posts h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}
.related-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.related-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}
.related-card .card-body {
  padding: var(--space-md);
}
.related-card .card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.8);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-md);
}
.footer-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
}
.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  padding: 4px 0;
  transition: color 0.15s;
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-legal {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.8;
  max-width: 700px;
}
.footer-copyright {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
}

/* ===== TOC ===== */
.toc-wrap {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0 var(--space-2xl);
}
.toc-wrap .toc-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}
.toc-wrap ol {
  list-style: none;
  counter-reset: toc;
  margin: 0;
  padding: 0;
}
.toc-wrap li {
  counter-increment: toc;
  margin-bottom: var(--space-xs);
}
.toc-wrap li::before {
  content: counter(toc) ".";
  color: var(--color-accent);
  font-weight: 600;
  margin-right: var(--space-sm);
  font-size: 0.88rem;
}
.toc-wrap a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}
.toc-wrap a:hover { color: var(--color-accent); }

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .header-inner { height: 56px; padding: 0 var(--space-md); }
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 12px var(--space-md);
    font-size: 0.95rem;
    width: 100%;
  }
  .single-post-hero { max-height: 280px; }
  .single-post-hero img { height: 280px; }
  .single-post-title-overlay h1 { font-size: 1.45rem; }
  article.post-content { padding: 0 var(--space-md) var(--space-2xl); }
  article.post-content h2 { font-size: 1.3rem; margin-top: var(--space-2xl); }
  .footer-top { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer-bottom { flex-direction: column; }
  .content-wrap { padding: var(--space-2xl) var(--space-md); }
  .related-grid { grid-template-columns: 1fr 1fr; }
  article.post-content table { font-size: 0.82rem; display: block; overflow-x: auto; }
  article.post-content thead th, article.post-content tbody td { padding: 8px 10px; white-space: nowrap; }
}

@media (max-width: 480px) {
  .related-grid { grid-template-columns: 1fr; }
  .single-post-hero { max-height: 220px; }
  .single-post-hero img { height: 220px; }
  .single-post-title-overlay h1 { font-size: 1.25rem; }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Focus visible for accessibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== PAGE TEMPLATE ===== */
.page-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}
.page-content h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
  letter-spacing: -0.02em;
}
.page-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: var(--space-2xl) 0 var(--space-md);
}
.page-content p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

/* Hide WP default elements */
.wp-site-blocks > header,
.wp-site-blocks > footer,
body > .wp-site-blocks > .has-global-padding { display: none !important; }