/* ─── Linkare Medical Knowledge ───
   Design tokens aligned with linkerai.io
   ─────────────────────────────────── */

:root {
  /* Colors — from linkerai.io globals.css */
  --primary: rgb(25, 93, 230);        /* #195DE6 */
  --primary-light: rgb(110, 148, 225); /* #6E94E1 */
  --accent: rgb(60, 100, 220);        /* #3C64DC */

  --bg-dark: rgb(28, 28, 30);         /* #1C1C1E — header/footer */
  --bg-light: rgb(253, 253, 253);     /* #FDFDFD — blog pages */
  --surface: rgb(255, 255, 255);      /* #FFFFFF */
  --surface-dark: rgb(44, 44, 46);    /* #2C2C2E */
  --paper: rgb(250, 250, 250);        /* #FAFAFA */

  --charcoal: rgb(26, 26, 26);        /* #1A1A1A */
  --body: rgb(45, 45, 45);            /* #2D2D2D */
  --muted: rgb(142, 142, 147);        /* #8E8E93 */

  --blockquote-bg: rgb(253, 250, 240); /* #FDFAF0 */
  --code-bg: rgb(37, 37, 40);         /* #252528 */

  --border-dark: rgba(255, 255, 255, 0.1);
  --border-light: rgba(26, 26, 26, 0.1);

  /* Layout */
  --reading-width: 700px;
  --content-width: 1152px;
  --header-height: 80px;

  /* Fonts */
  --font-display: "Pretendard Variable", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: "Newsreader", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

body {
  font-family: var(--font-display);
  color: var(--body);
  background: var(--bg-light);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Header (matches linkerai.io) ─── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-height);
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}

.header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
}

.site-logo:hover { text-decoration: none; color: var(--paper); }

.site-nav {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.site-nav a:hover { color: var(--paper); text-decoration: none; }

/* ─── Main ─── */

.main-content {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* ─── Article Layout ─── */

.article {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

/* Breadcrumb */
.article-breadcrumb {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.article-breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.article-breadcrumb a:hover { color: var(--primary); text-decoration: none; }

.breadcrumb-sep {
  margin: 0 0.4rem;
  color: var(--border-light);
}

.breadcrumb-current {
  color: var(--charcoal);
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.article-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--charcoal);
  line-height: 1.3;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.original-source {
  margin-top: 0.75rem;
}

.original-source a {
  color: var(--primary);
  font-size: 0.875rem;
  text-decoration: underline;
  text-decoration-color: rgba(25, 93, 230, 0.4);
  text-underline-offset: 3px;
}

/* ─── Article Body (matches linkerai.io MDX) ─── */

.article-body {
  margin-bottom: 2.5rem;
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.article-body p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--body);
  margin-bottom: 1.5rem;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.article-body li {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--body);
  margin-bottom: 0.5rem;
}

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

.article-body blockquote {
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-left: 4px solid var(--primary);
  background: var(--blockquote-bg);
  font-family: var(--font-serif);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

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

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--code-bg);
  color: var(--primary-light);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.article-body pre {
  background: var(--code-bg);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.article-body pre code {
  background: none;
  padding: 0;
  font-size: 0.9rem;
  color: var(--paper);
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(25, 93, 230, 0.4);
  text-underline-offset: 3px;
}

.article-body img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  margin: 1.5rem 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.article-body th,
.article-body td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  text-align: left;
}

.article-body th {
  background: var(--paper);
  font-weight: 600;
  color: var(--charcoal);
}

/* ─── Tags ─── */

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(25, 93, 230, 0.08);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
}

/* ─── Article Footer ─── */

.article-footer {
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
  margin-top: 2.5rem;
}

.disclaimer {
  background: var(--paper);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

.disclaimer-en {
  margin-top: 0.75rem;
  font-size: 0.8rem;
}

.original-link {
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.license {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ─── Profile Layout ─── */

.profile {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.profile-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.profile-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
}

.profile-doctor {
  font-size: 1rem;
  color: var(--muted);
}

.profile-website {
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.profile-location {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.profile-body {
  margin-bottom: 2rem;
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--body);
}

.profile-body h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.profile-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.profile-articles h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 1.25rem;
}

/* ─── Article List (index + profile) ─── */

.article-list {
  list-style: none;
  padding: 0;
}

.article-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
}

.article-list li:last-child {
  border-bottom: none;
}

.article-list a {
  color: var(--charcoal);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.article-list a:hover {
  color: var(--primary);
  text-decoration: none;
}

.article-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 0.25rem;
  line-height: 1.5;
}

.article-date {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

/* ─── Index Page ─── */

.index-page {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.index-page h1 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
}

.index-desc {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 3rem;
}

.hospital-list {
  margin-bottom: 3rem;
}

.hospital-list h2 {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.hospital-list ul {
  list-style: none;
  padding: 0;
}

.hospital-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.hospital-list li:last-child {
  border-bottom: none;
}

.hospital-list a {
  color: var(--charcoal);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.hospital-list a:hover { color: var(--primary); text-decoration: none; }

.hospital-doctor {
  font-size: 0.875rem;
  color: var(--muted);
}

.article-count {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--primary);
  margin-left: auto;
}

.recent-articles {
  margin-top: 1rem;
}

.recent-articles h2 {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.meta-hospital {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary);
  text-transform: uppercase;
  margin-left: 0.5rem;
}

/* ─── Footer (matches linkerai.io) ─── */

.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-dark);
  color: var(--muted);
}

.footer-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}

.footer-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
}

.footer-logo:hover { text-decoration: none; color: var(--paper); }

.footer-desc {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: var(--reading-width);
  line-height: 1.6;
}

.footer-links {
  display: contents;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--paper); text-decoration: none; }

.footer-bottom {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--border-dark);
  font-size: 0.8rem;
  color: var(--muted);
}

/* ─── Responsive ─── */

@media (max-width: 768px) {
  .site-nav { display: none; }

  .article-header h1,
  .profile-header h1 { font-size: 1.6rem; }

  .index-page h1 { font-size: 2rem; }

  .article-body p,
  .article-body li { font-size: 1rem; }

  .article-body h2 { font-size: 1.4rem; }
  .article-body h3 { font-size: 1.2rem; }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .article,
  .profile,
  .index-page {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}