/* Study Health — lightweight stylesheet for low-bandwidth / feature-phone browsers.
   System fonts only (no webfont download). No background images. Small file size
   on purpose: this matters for Free Basics' data-efficiency review. */

:root {
  --bg:        #F4F8F2;
  --bg-card:   #FFFFFF;
  --ink:       #1E2A24;
  --ink-soft:  #4B5A52;
  --teal:      #1F6F5C;
  --teal-dark: #154E41;
  --gold:      #C97A1A;
  --line:      #D9E3D6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--teal-dark);
  line-height: 1.25;
  margin: 0 0 0.5em 0;
}

a { color: var(--teal-dark); }
a:visited { color: var(--teal); }

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Header ---------- */

.site-header {
  background: var(--teal);
  border-bottom: 4px solid var(--gold);
  color: #fff;
  padding: 18px 0 14px 0;
}

.site-header .wrap { max-width: 680px; }

.site-name {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
}

.site-header .tagline {
  margin: 2px 0 14px 0;
  color: #DCEAE3;
  font-size: 14px;
}

.search-form {
  margin: 0 0 12px 0;
}
.search-form input[type="text"] {
  width: 65%;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 15px;
}
.search-form button {
  padding: 7px 12px;
  border: 0;
  border-radius: 3px;
  background: var(--gold);
  color: #fff;
  font-size: 15px;
}

.site-nav a {
  display: inline-block;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  margin: 0 10px 6px 0;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255,255,255,0.4);
}
.site-nav a:visited { color: #fff; }

/* ---------- Main content ---------- */

main.wrap { padding-top: 22px; padding-bottom: 30px; min-height: 50vh; }

.hero h1 { font-size: 26px; margin-bottom: 10px; }
.hero p.lead { color: var(--ink-soft); font-size: 17px; }

.category-grid {
  list-style: none;
  margin: 18px 0 0 0;
  padding: 0;
}
.category-grid li {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 6px solid var(--teal);
  border-radius: 4px;
  margin-bottom: 10px;
  padding: 12px 14px;
}
.category-grid a.cat-link {
  text-decoration: none;
  font-family: Georgia, serif;
  font-size: 19px;
  color: var(--teal-dark);
}
.category-grid p {
  margin: 4px 0 0 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.article-list { list-style: none; margin: 16px 0; padding: 0; }
.article-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.article-list a { font-size: 18px; text-decoration: none; }
.article-list p { margin: 4px 0 0 0; color: var(--ink-soft); font-size: 15px; }

.breadcrumb {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.breadcrumb a { text-decoration: none; }

.article-header { border-left: 6px solid var(--teal); padding-left: 14px; margin-bottom: 18px; }
.article-header h1 { font-size: 24px; margin-bottom: 4px; }
.article-summary { color: var(--ink-soft); font-size: 16px; margin: 0; }

.article-body p { margin: 0 0 1em 0; }

.related { margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--line); }
.related h2 { font-size: 18px; }

.notice {
  background: #FBF3E4;
  border: 1px solid #E9D7AE;
  border-radius: 4px;
  padding: 10px 14px;
  font-size: 14px;
  color: #6B4F1D;
  margin: 14px 0;
}

form.contact-form p { margin: 0 0 12px 0; }
form.contact-form label { display: block; font-size: 14px; margin-bottom: 4px; color: var(--ink-soft); }
form.contact-form input[type="text"],
form.contact-form input[type="email"],
form.contact-form textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 16px;
  font-family: inherit;
}
form.contact-form button {
  padding: 9px 18px;
  border: 0;
  border-radius: 3px;
  background: var(--teal);
  color: #fff;
  font-size: 16px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: #E8EFE5;
  border-top: 1px solid var(--line);
  padding: 18px 0 24px 0;
  margin-top: 30px;
}
.site-footer .disclaimer {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 10px 0;
}
.footer-nav a {
  font-size: 13px;
  margin-right: 14px;
  text-decoration: none;
}