/*
 * Global Health Research in Practice - Notes Template
 * Matches ghrbook.com styling
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Sky blues - primary */
  --sky-50: #f0f9ff;
  --sky-100: #e0f2fe;
  --sky-600: #0284c7;
  --sky-700: #0369a1;

  /* Slate - text and backgrounds */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  /* Teal accent */
  --teal-600: #0d9488;

  /* Chart colors */
  --chart-blue: #0284c7;
  --chart-orange: #E69F00;
  --chart-gray: #94a3b8;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--slate-900);
  line-height: 1.6;
  background: #ffffff;
  margin: 0;
  padding: 0;
}

/* === Header - matches website === */
.ghr-header {
  background: #ffffff;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0;
}

.ghr-header-nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  height: 4rem;
  align-items: center;
  justify-content: space-between;
}

.ghr-logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.ghr-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--sky-700);
}

.ghr-logo-subtitle {
  font-size: 0.875rem;
  color: var(--slate-600);
}

.ghr-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.ghr-nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-600);
  text-decoration: none;
  transition: color 0.2s;
}

.ghr-nav-link:hover {
  color: var(--sky-700);
}

.ghr-btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: white;
  background-color: var(--sky-600);
  border-radius: 0.5rem;
  text-decoration: none;
  transition: background-color 0.2s;
}

.ghr-btn-primary:hover {
  background-color: var(--sky-700);
}

/* === Main Content Container === */
.ghr-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* === Title Block === */
.title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--slate-500);
  font-weight: 400;
  margin-bottom: 2rem;
}

/* === Headings === */
h1, h2, h3, h4 {
  font-weight: 600;
  color: var(--slate-900);
  letter-spacing: -0.02em;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--slate-200);
}

h3 {
  font-size: 1.25rem;
  color: var(--slate-800);
}

/* === Links === */
a {
  color: var(--sky-600);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--sky-700);
  text-decoration: underline;
}

/* === Code === */
pre {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 0.75rem;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.875rem;
}

code {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 0.875em;
}

:not(pre) > code {
  background: var(--slate-100);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  color: var(--slate-700);
}

/* === Code Fold === */
details.code-fold > summary {
  cursor: pointer;
  color: var(--slate-500);
  font-size: 0.875rem;
  padding: 0.5rem 0;
  list-style: none;
}

details.code-fold > summary::-webkit-details-marker {
  display: none;
}

details.code-fold > summary::before {
  content: "▸ ";
}

details.code-fold[open] > summary::before {
  content: "▾ ";
}

/* === Tables === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

thead {
  background: var(--slate-50);
}

th {
  text-align: left;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--slate-200);
  color: var(--slate-700);
}

td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--slate-100);
}

caption {
  caption-side: top;
  text-align: left;
  font-style: italic;
  color: var(--slate-500);
  padding-bottom: 0.5rem;
  font-size: 0.875rem;
}

/* === Blockquotes === */
blockquote {
  border-left: 3px solid var(--sky-600);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--sky-50);
  border-radius: 0 0.5rem 0.5rem 0;
}

blockquote p {
  margin: 0;
  color: var(--slate-700);
}

/* === Figures === */
figure {
  margin: 2rem 0;
}

figcaption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-top: 0.75rem;
}

/* === TOC === */
#TOC {
  background: var(--slate-50);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

#TOC > ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

#TOC li {
  margin: 0.4rem 0;
}

#TOC ul ul {
  padding-left: 1.25rem;
  margin-top: 0.4rem;
}

#TOC a {
  color: var(--slate-600);
  font-size: 0.9rem;
}

#TOC a:hover {
  color: var(--sky-600);
}

/* === Lists === */
ul, ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

li {
  margin: 0.4rem 0;
}

li::marker {
  color: var(--sky-600);
}

/* === Strong/Em === */
strong {
  font-weight: 600;
  color: var(--slate-900);
}

/* === Footer === */
.ghr-footer {
  max-width: 1100px;
  margin: 3rem auto 0;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--slate-200);
  text-align: center;
  color: var(--slate-500);
  font-size: 0.875rem;
}

.ghr-footer a {
  color: var(--sky-600);
  font-weight: 500;
}

.ghr-footer-links {
  margin-top: 0.5rem;
}

.ghr-footer-links a {
  margin: 0 0.75rem;
}

/* === Video Embed === */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  margin: 1rem 0;
}
.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.5rem;
  border: 1px solid var(--slate-200);
}

/* === Responsive === */
@media (max-width: 640px) {
  .title {
    font-size: 1.75rem;
  }

  .subtitle {
    font-size: 1.1rem;
  }

  .ghr-logo-subtitle {
    display: none;
  }

  .ghr-nav-links {
    display: none;
  }
}

/* === Print === */
@media print {
  .ghr-header {
    position: relative;
    box-shadow: none;
    border-bottom: 1px solid var(--slate-200);
  }
}