/* ==========================================================================
   Medicine Comparison Website — Master Stylesheet
   Color Scheme: Earthy greens (TCM/nature) + Clinical blues (Western medicine)
   ========================================================================== */

/* --- CSS Custom Properties (Easy color scheme changes) --- */
:root {
  /* Primary palette */
  --color-tcm:             #2d6a4f;
  --color-tcm-light:       #40916c;
  --color-tcm-pale:        #d8f3dc;
  --color-western:         #1d3557;
  --color-western-light:   #457b9d;
  --color-western-pale:    #a8dadc;

  /* Neutrals */
  --color-bg:              #fefaf6;
  --color-bg-alt:          #f4f0eb;
  --color-text:            #2b2b2b;
  --color-text-muted:      #6c6c6c;
  --color-border:          #d5cec5;

  /* Accent */
  --color-accent:          #e76f51;
  --color-accent-light:    #f4a261;

  /* Spacing */
  --max-width:             1140px;
  --gutter:                2rem;

  /* Typography */
  --font-heading:          'Georgia', 'Times New Roman', serif;
  --font-body:             'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--color-western-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent); }

/* --- Typography --- */
h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.3; color: var(--color-western); }
h1 { font-size: 2.4rem; margin-bottom: 1rem; }
h2 { font-size: 1.8rem; margin: 2.5rem 0 1rem; }
h3 { font-size: 1.35rem; margin: 2rem 0 .75rem; }
h4 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
p  { margin-bottom: 1.15rem; }
ul, ol { margin: 0 0 1.15rem 1.5rem; }
li { margin-bottom: .4rem; }
blockquote {
  border-left: 4px solid var(--color-tcm-light);
  padding: .75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--color-tcm-pale);
  color: var(--color-tcm);
  font-style: italic;
}

/* --- Layout --- */
.wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* --- Site Header --- */
.site-header {
  background: linear-gradient(135deg, var(--color-western) 0%, var(--color-tcm) 100%);
  color: #fff;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.site-header .wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-header .logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: #fff;
  white-space: nowrap;
}
.site-header .logo span { color: var(--color-accent-light); }

/* --- Navigation --- */
.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: rgba(255,255,255,.85);
  padding: .4rem .75rem;
  border-radius: 4px;
  font-size: .9rem;
  transition: background .2s, color .2s;
}
.main-nav a:hover,
.main-nav a.active {
  background: rgba(255,255,255,.15);
  color: #fff;
}

/* Mobile nav toggle */
.nav-toggle { display: none; background: none; border: 2px solid rgba(255,255,255,.5); color: #fff; padding: .35rem .7rem; border-radius: 4px; cursor: pointer; font-size: 1.1rem; }
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav { width: 100%; display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .main-nav a { display: block; padding: .6rem .75rem; }
}

/* --- Hero / Page Header --- */
.page-hero {
  background: linear-gradient(135deg, var(--color-tcm-pale) 0%, var(--color-western-pale) 100%);
  padding: 3rem 0 2.5rem;
  text-align: center;
  border-bottom: 3px solid var(--color-border);
}
.page-hero h1 { color: var(--color-western); margin-bottom: .5rem; }
.page-hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  padding: .75rem 0;
  font-size: .85rem;
  color: var(--color-text-muted);
}
.breadcrumbs a { color: var(--color-tcm-light); }
.breadcrumbs span { margin: 0 .4rem; }

/* --- Main Content Area --- */
.content-area {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  padding: 2rem 0 4rem;
}
@media (max-width: 900px) {
  .content-area { grid-template-columns: 1fr; }
}

.main-content { min-width: 0; }

/* --- Article Styling --- */
.article-image {
  margin: 1.5rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

/* --- Comparison Sections --- */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}
@media (max-width: 650px) {
  .comparison-grid { grid-template-columns: 1fr; }
}

.approach-card {
  border-radius: 8px;
  padding: 1.5rem;
  border-top: 4px solid;
}
.approach-card.tcm {
  background: var(--color-tcm-pale);
  border-color: var(--color-tcm);
}
.approach-card.western {
  background: var(--color-western-pale);
  border-color: var(--color-western);
}
.approach-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}
.approach-card.tcm h3 { color: var(--color-tcm); }
.approach-card.western h3 { color: var(--color-western); }

.complementary-box {
  background: linear-gradient(135deg, var(--color-tcm-pale) 0%, var(--color-western-pale) 100%);
  border: 2px solid var(--color-accent-light);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}
.complementary-box h3 {
  color: var(--color-accent);
  margin-top: 0;
}

/* --- Key Takeaway Box --- */
.key-takeaway {
  background: var(--color-bg-alt);
  border-left: 5px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
}
.key-takeaway h4 { color: var(--color-accent); margin-top: 0; }

/* --- Sidebar --- */
.sidebar {}
.sidebar-widget {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}
.sidebar-widget h3 {
  font-size: 1.05rem;
  color: var(--color-tcm);
  margin: 0 0 .75rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--color-tcm-pale);
}
.sidebar-widget ul { margin: 0; padding: 0; list-style: none; }
.sidebar-widget li { margin-bottom: .5rem; }
.sidebar-widget a { font-size: .92rem; }

/* --- Category Cards (Homepage & Category Index) --- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}
.category-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,.1);
}
.category-card .card-image {
  height: 180px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-tcm-pale), var(--color-western-pale));
}
.category-card .card-image svg { width: 100%; height: 100%; }
.category-card .card-body { padding: 1.25rem; }
.category-card h3 { margin: 0 0 .5rem; font-size: 1.15rem; }
.category-card p { font-size: .92rem; color: var(--color-text-muted); margin-bottom: .75rem; }
.card-link {
  display: inline-block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--color-tcm);
  border-bottom: 2px solid var(--color-tcm-pale);
  transition: border-color .2s;
}
.card-link:hover { border-color: var(--color-tcm); color: var(--color-tcm); }

/* Article listing inside category pages */
.article-list { list-style: none; padding: 0; margin: 2rem 0; }
.article-list li {
  padding: 1.25rem;
  margin-bottom: 1rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: box-shadow .2s;
}
.article-list li:hover { box-shadow: 0 3px 12px rgba(0,0,0,.07); }
.article-list h3 { margin: 0 0 .4rem; }
.article-list p { margin: 0; font-size: .92rem; color: var(--color-text-muted); }

/* --- Table styling --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .95rem;
}
th, td { padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--color-border); }
th { background: var(--color-bg-alt); font-weight: 700; color: var(--color-western); }
tr:hover td { background: rgba(216,243,220,.2); }

/* --- Footer --- */
.site-footer {
  background: var(--color-western);
  color: rgba(255,255,255,.75);
  padding: 2.5rem 0 1.5rem;
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.site-footer h4 { color: var(--color-accent-light); margin-bottom: .75rem; font-size: 1rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .4rem; }
.site-footer a { color: rgba(255,255,255,.75); }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 1.25rem;
  text-align: center;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
}

/* --- Utility --- */
.text-tcm    { color: var(--color-tcm); }
.text-west   { color: var(--color-western); }
.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }

/* --- Schema / SEO hidden --- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* --- Print --- */
@media print {
  .site-header, .site-footer, .sidebar, .nav-toggle { display: none; }
  .content-area { grid-template-columns: 1fr; }
  body { font-size: 12pt; color: #000; background: #fff; }
}