/* ===== Medicare Clinical Archive Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Newsreader:wght@400;600;700&family=Public+Sans:wght@400;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --primary: #001736;
  --primary-container: #002b5c;
  --on-primary: #ffffff;
  --on-primary-container: #7594cb;
  --inverse-primary: #aac7ff;
  --secondary: #b6171e;
  --secondary-container: #da3433;
  --on-secondary: #ffffff;
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  --surface: #fcf9f8;
  --surface-dim: #dcd9d9;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f3f2;
  --surface-container: #f0eded;
  --surface-container-high: #eae7e7;
  --surface-container-highest: #e5e2e1;
  --on-surface: #1c1b1b;
  --on-surface-variant: #43474f;
  --outline: #747780;
  --outline-variant: #c4c6d0;
  --surface-tint: #3f5f92;
  --nav-width: 260px;
  --content-max-width: 960px;
  --infobox-width: 300px;
  --section-gap: 48px;
  --gutter: 32px;
  --component-padding: 1.5rem;
  --header-height: 60px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: var(--inverse-primary);
  color: var(--primary);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--outline-variant);
  border-radius: 8px;
  border: 3px solid var(--surface); /* creates padding effect */
}

::-webkit-scrollbar-thumb:hover {
  background: var(--outline);
}

/* --- Typography --- */
h1 { font-family: 'Newsreader', Georgia, serif; font-size: 40px; font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-family: 'Newsreader', Georgia, serif; font-size: 28px; font-weight: 600; line-height: 1.3; }
h3 { font-family: 'Inter', sans-serif; font-size: 20px; font-weight: 600; line-height: 1.4; }
.label-caps { font-family: 'Public Sans', sans-serif; font-size: 12px; font-weight: 700; line-height: 1; letter-spacing: 0.05em; text-transform: uppercase; }
.caption { font-family: 'Public Sans', sans-serif; font-size: 13px; font-weight: 400; line-height: 1.5; }

/* ===================== */
/* SEARCH HOME STATE     */
/* ===================== */
.app { min-height: 100vh; display: flex; flex-direction: column; }

/* --- Sticky Header (hidden initially, shown on details) --- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-container-lowest);
  border-bottom: 1px solid var(--outline-variant);
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 20px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.3s ease;
}

.app-header.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  text-decoration: none;
  flex-shrink: 0;
}

.header-brand img { height: 28px; width: auto; }
.header-brand span {
  font-family: 'Newsreader', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}

.header-search {
  flex: 1;
  max-width: 620px;
  position: relative;
}

.header-search input {
  width: 100%;
  height: 42px;
  padding: 0 42px 0 40px;
  border: 1px solid var(--outline-variant);
  border-radius: 24px;
  background: var(--surface-container-low);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--on-surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.header-search input:focus {
  border-color: var(--surface-tint);
  box-shadow: 0 0 0 2px rgba(63, 95, 146, 0.15);
  background: var(--surface-container-lowest);
}

.header-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--outline);
  font-size: 20px;
  pointer-events: none;
}

.header-search .clear-btn {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--outline);
  cursor: pointer;
  font-size: 20px;
  padding: 4px;
  border-radius: 50%;
  display: none;
  transition: color 0.15s;
}
.header-search .clear-btn:hover { color: var(--on-surface); }
.header-search input:not(:placeholder-shown) ~ .clear-btn { display: block; }

/* --- Hero / Search Home --- */
.search-home {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  transition: opacity 0.4s ease, transform 0.4s ease;
  min-height: calc(100vh - 80px);
}

.search-home.hidden {
  opacity: 0;
  transform: scale(0.96) translateY(-30px);
  pointer-events: none;
  position: absolute;
  width: 100%;
}

.hero-brand {
  text-align: center;
  margin-bottom: 36px;
}

.hero-brand img {
  height: 52px;
  width: auto;
  margin-bottom: 8px;
}

.hero-title {
  font-family: 'Newsreader', serif;
  font-size: 64px;
  font-weight: 700;
  color: var(--primary-container);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-subtitle {
  font-family: 'Public Sans', sans-serif;
  font-size: 15px;
  color: var(--on-surface-variant);
  margin-top: 8px;
}

/* Hero Search Bar */
.hero-search-container { width: 100%; max-width: 652px; }

.hero-search {
  position: relative;
  width: 100%;
}

.hero-search input {
  width: 100%;
  height: 52px;
  padding: 0 52px 0 48px;
  border: 1px solid var(--outline-variant);
  border-radius: 28px;
  background: var(--surface-container-lowest);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  color: var(--on-surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.3s;
}

.hero-search input:focus {
  border-color: var(--surface-tint);
  box-shadow: 0 2px 12px rgba(63, 95, 146, 0.12);
}

.hero-search input::placeholder { color: var(--outline); }

.hero-search .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--outline);
  font-size: 22px;
  pointer-events: none;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}

.btn-search, .btn-lucky {
  font-family: 'Public Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}

.btn-search {
  background: var(--primary-container);
  color: var(--on-primary);
}
.btn-search:hover { background: var(--primary); box-shadow: 0 2px 8px rgba(0,23,54,0.18); }
.btn-search:active { transform: scale(0.97); }

.btn-lucky {
  background: var(--surface-container-low);
  color: var(--on-surface);
  border-color: var(--outline-variant);
}
.btn-lucky:hover { background: var(--surface-container); }

/* Trust indicators */
.trust-indicators {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 48px;
  font-family: 'Public Sans', sans-serif;
  font-size: 13px;
  color: var(--on-surface-variant);
}

.trust-indicators .material-symbols-outlined { font-size: 16px; margin-right: 4px; vertical-align: -3px; }
.trust-indicators .dot { color: var(--outline-variant); }

/* ===================== */
/* DETAILS / ARTICLE VIEW */
/* ===================== */
.details-view {
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.details-view.visible {
  display: flex;
  opacity: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* --- Sidebar TOC --- */
.toc-sidebar {
  width: var(--nav-width);
  position: sticky;
  top: calc(var(--header-height) + 1px);
  height: calc(100vh - var(--header-height) - 1px);
  overflow-y: auto;
  border-right: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  padding: 28px 0;
  flex-shrink: 0;
}

.toc-sidebar::-webkit-scrollbar { width: 4px; }
.toc-sidebar::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 4px; }

.toc-header {
  padding: 0 20px 12px;
}

.toc-header h2 {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

.toc-header span {
  font-size: 12px;
  color: var(--outline);
}

.toc-nav { display: flex; flex-direction: column; gap: 2px; }

.toc-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--on-surface-variant);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.15s ease;
}

.toc-link:hover {
  background: var(--surface-container);
  border-left-color: var(--outline-variant);
  color: var(--on-surface);
}

.toc-link.active {
  font-weight: 600;
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--surface-container-lowest);
}

.toc-link .material-symbols-outlined { font-size: 20px; }

/* --- Main Content Area --- */
.article-main {
  flex: 1;
  min-width: 0;
  padding: 32px 48px 80px;
}

.article-title {
  border-bottom: 1px solid var(--outline-variant);
  padding-bottom: 8px;
  margin-bottom: 24px;
  color: var(--on-surface);
}

.article-layout {
  display: flex;
  gap: 32px;
}

.article-content {
  flex: 1;
  min-width: 0;
}

.article-section {
  margin-bottom: var(--section-gap);
  animation: fadeInUp 0.5s ease both;
}

.article-section h2 {
  border-bottom: 1px solid var(--outline-variant);
  padding-bottom: 6px;
  margin-bottom: 16px;
  color: var(--on-surface);
}

.article-section p {
  margin-bottom: 12px;
  color: var(--on-surface);
}

.article-section ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 12px;
}

.article-section li {
  margin-bottom: 6px;
  line-height: 1.6;
}

/* --- Drug Infobox (Right Rail) --- */
.drug-infobox {
  width: var(--infobox-width);
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + 32px);
  align-self: flex-start;
}

.infobox-card {
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  overflow: hidden;
}

.infobox-header {
  background: var(--surface-container-high);
  padding: 12px 16px;
  border-bottom: 1px solid var(--outline-variant);
  text-align: center;
}

.infobox-header h3 {
  font-size: 18px;
  color: var(--on-surface);
}

.infobox-image-container {
  border-bottom: 1px solid var(--outline-variant);
  background-color: #fff; /* Ensure image has a clean background */
  padding: 16px;
  text-align: center;
}

.infobox-pill-image {
  max-width: 100%;
  max-height: 180px;
  object-fit: contain;
}

.infobox-section {
  padding: 16px;
  border-bottom: 1px solid var(--outline-variant);
}

.infobox-section:last-child { border-bottom: none; }

.infobox-section h4 {
  font-family: 'Public Sans', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: 10px;
}

.infobox-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.infobox-table tr { border-bottom: 1px solid rgba(196, 198, 208, 0.3); }
.infobox-table tr:last-child { border-bottom: none; }

.infobox-table th {
  text-align: left;
  font-weight: 400;
  color: var(--on-surface-variant);
  padding: 8px 8px 8px 0;
  width: 45%;
  vertical-align: top;
}

.infobox-table td {
  text-align: right;
  padding: 8px 0 8px 8px;
  color: var(--on-surface);
  vertical-align: top;
}

/* --- Medical Alert Banner --- */
.alert-banner {
  background: var(--error-container);
  border-left: 4px solid var(--error);
  padding: 16px;
  display: flex;
  gap: 12px;
  border-radius: 0 4px 4px 0;
  margin-bottom: 16px;
}

.alert-banner .material-symbols-outlined {
  color: var(--error);
  font-size: 22px;
  margin-top: 2px;
  flex-shrink: 0;
}

.alert-banner h3 {
  font-size: 16px;
  color: var(--on-error-container);
  margin-bottom: 6px;
}

.alert-banner p {
  font-size: 14px;
  color: var(--on-error-container);
  line-height: 1.5;
}

/* Info banner (non-critical) */
.info-banner {
  background: rgba(170, 199, 255, 0.15);
  border-left: 4px solid var(--surface-tint);
  padding: 16px;
  display: flex;
  gap: 12px;
  border-radius: 0 4px 4px 0;
  margin-bottom: 16px;
}

.info-banner .material-symbols-outlined {
  color: var(--surface-tint);
  font-size: 22px;
  margin-top: 2px;
  flex-shrink: 0;
}

.info-banner h3 { font-size: 16px; color: var(--primary); margin-bottom: 6px; }
.info-banner p { font-size: 14px; color: var(--on-surface); line-height: 1.5; }

/* ===================== */
/* LOADING STATE         */
/* ===================== */
.loading-overlay {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.loading-overlay.visible { display: flex; }

.skeleton {
  background: linear-gradient(90deg, var(--surface-container) 25%, var(--surface-container-high) 50%, var(--surface-container) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  width: 100%;
}

.skeleton-title { height: 40px; width: 60%; margin-bottom: 24px; }
.skeleton-line { height: 16px; margin-bottom: 12px; }
.skeleton-line.short { width: 75%; }
.skeleton-line.shorter { width: 50%; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===================== */
/* NO RESULTS STATE      */
/* ===================== */
.no-results {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px;
  text-align: center;
}

.no-results.visible { display: flex; }

.no-results .material-symbols-outlined {
  font-size: 64px;
  color: var(--outline-variant);
  margin-bottom: 16px;
}

.no-results h2 {
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  color: var(--on-surface);
  margin-bottom: 8px;
}

.no-results p { color: var(--on-surface-variant); max-width: 400px; }

.no-results .btn-back {
  margin-top: 24px;
  padding: 10px 28px;
  background: var(--primary-container);
  color: var(--on-primary);
  border: none;
  border-radius: 6px;
  font-family: 'Public Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.no-results .btn-back:hover { background: var(--primary); }

/* ===================== */
/* FOOTER                */
/* ===================== */
.app-footer {
  background: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant);
  padding: 24px;
  text-align: center;
  margin-top: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
}

.footer-links a {
  font-family: 'Public Sans', sans-serif;
  font-size: 13px;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--primary); text-decoration: underline; }

.footer-copy {
  font-family: 'Public Sans', sans-serif;
  font-size: 12px;
  color: var(--outline);
}

/* ===================== */
/* ANIMATIONS            */
/* ===================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Staggered section animation */
.article-section:nth-child(1) { animation-delay: 0.05s; }
.article-section:nth-child(2) { animation-delay: 0.1s; }
.article-section:nth-child(3) { animation-delay: 0.15s; }
.article-section:nth-child(4) { animation-delay: 0.2s; }
.article-section:nth-child(5) { animation-delay: 0.25s; }
.article-section:nth-child(6) { animation-delay: 0.3s; }
.article-section:nth-child(7) { animation-delay: 0.35s; }
.article-section:nth-child(8) { animation-delay: 0.4s; }

/* ===================== */
/* RESPONSIVE            */
/* ===================== */
@media (max-width: 1100px) {
  .drug-infobox { display: none; }
}

@media (max-width: 860px) {
  .toc-sidebar { display: none; }
  .article-main { padding: 24px 20px 60px; }
  .article-title { font-size: 32px; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 42px; }
  .hero-search input { height: 46px; font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .trust-indicators { flex-direction: column; gap: 8px; }
  .header-brand span { display: none; }
  .header-search input { font-size: 14px; }
  .article-main { padding: 16px 14px 48px; }
  .alert-banner { flex-direction: column; gap: 8px; }
}

/* Autocomplete dropdown */
.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-top: none;
  border-radius: 0 0 20px 20px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  z-index: 200;
  display: none;
  max-height: 380px;
  overflow-y: auto;
  padding: 6px 0;
}

.autocomplete-dropdown.visible { display: block; }

/* When dropdown is open, round the bottom of the search bar */
.hero-search:has(.autocomplete-dropdown.visible) input {
  border-radius: 28px 28px 0 0;
  border-bottom-color: transparent;
}

.header-search:has(.autocomplete-dropdown.visible) input {
  border-radius: 24px 24px 0 0;
  border-bottom-color: transparent;
}

.autocomplete-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  font-size: 15px;
  color: var(--on-surface);
  cursor: pointer;
  transition: background 0.1s;
}

.autocomplete-item:hover, .autocomplete-item.highlighted {
  background: var(--surface-container-low);
}

.autocomplete-item .material-symbols-outlined {
  font-size: 18px;
  color: var(--outline);
  flex-shrink: 0;
}

.autocomplete-item .ac-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.autocomplete-item .ac-name strong {
  font-weight: 400;
  color: var(--on-surface);
}

.autocomplete-item .ac-name {
  font-weight: 600;
  color: var(--on-surface);
}

.autocomplete-item .ac-tag {
  font-family: 'Public Sans', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 10px;
  flex-shrink: 0;
}

.ac-tag--brand {
  background: rgba(170, 199, 255, 0.2);
  color: var(--surface-tint);
}

.ac-tag--generic {
  background: rgba(197, 199, 200, 0.25);
  color: var(--on-surface-variant);
}

.ac-tag--suggestion {
  background: rgba(255, 193, 100, 0.2);
  color: #a66d1b;
}

.ac-tag--match {
  background: rgba(170, 199, 255, 0.15);
  color: var(--on-surface-variant);
}

/* FDA disclaimer */
.fda-disclaimer {
  margin-top: 48px;
  padding: 16px;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: 4px;
  font-size: 13px;
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* ===================== */
/* MODAL POPUP           */
/* ===================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--surface);
  border-radius: 16px;
  width: 90%;
  max-width: 480px;
  position: relative;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--surface-container-high);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.modal-close:hover {
  background: var(--outline-variant);
  color: var(--on-surface);
}

.modal-body {
  padding: 32px;
}

.modal-body h2 {
  font-family: 'Newsreader', serif;
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 16px;
}

.modal-body p {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--on-surface-variant);
  line-height: 1.6;
  margin-bottom: 16px;
}

.modal-credits {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--outline-variant);
  text-align: center;
}

.modal-credits p {
  margin-bottom: 12px;
  font-size: 16px;
  color: var(--on-surface);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--surface-container-high);
  color: var(--on-surface);
  text-decoration: none;
  font-family: 'Public Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--outline-variant);
  transition: all 0.2s ease;
}

.github-link:hover {
  background: var(--surface-container-highest);
  border-color: var(--outline);
  transform: translateY(-1px);
}

.github-icon {
  color: var(--on-surface);
}

/* ===================== */
/* MOBILE RESPONSIVENESS */
/* ===================== */
@media (max-width: 1024px) {
  .details-view {
    flex-direction: column;
  }
  
  .toc-sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--outline-variant);
    padding: 16px 24px;
  }
  
  .toc-nav {
    display: flex;
    overflow-x: auto;
    gap: 16px;
    padding-bottom: 8px;
    margin-top: 8px;
    flex-direction: row;
  }
  
  .toc-nav a {
    white-space: nowrap;
    padding: 6px 12px;
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: 4px;
    background: var(--surface-container-low);
  }
  
  .toc-nav a:hover, .toc-nav a.active {
    border-left: none;
    background: var(--surface-container-highest);
  }
  
  .article-main {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  .article-layout {
    flex-direction: column-reverse;
    gap: 24px;
  }
  
  .drug-infobox {
    width: 100%;
    position: static;
    margin-bottom: 8px;
  }
  
  .hero-title {
    font-size: 42px;
  }
  
  .article-main {
    padding: 24px 24px 80px;
  }
  
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 16px;
    height: auto;
    gap: 12px;
  }
  
  .header-brand {
    margin-right: 0;
  }
  
  .header-search {
    max-width: 100%;
    width: 100%;
    margin: 0;
  }
}

@media (max-width: 480px) {
  .article-main {
    padding: 16px 16px 80px;
  }
  .search-home {
    padding: 0 16px;
  }
}