/* ═══════ BZY HEALTH RESEARCH — DESIGN SYSTEM ═══════ */
/* Editorial. Typographic. Restrained. */

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

:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --sidebar-bg: #fafaf8;
  --sidebar-width: 220px;
  --border: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.12);
  --text: #1c1c1c;
  --text-secondary: #6b6b6b;
  --text-tertiary: #a0a0a0;
  --accent: #1c1c1c;
  --accent-soft: #6b6b6b;
  --link: #3d3d3d;
  --green: #2d7a4f;
  --orange: #b35c00;
  --red: #b33a3a;
  --purple: #6b4fa0;
  --blue: #3a6fb3;
  --tag-bg: rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.03);
  --shadow-md: 0 2px 12px rgba(0,0,0,0.05);
  --radius: 6px;
  --radius-sm: 4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  min-height: 100vh;
  font-size: 15px;
}

::selection { background: rgba(0,0,0,0.08); }

/* ═══════ SIDEBAR ═══════ */

.sidebar {
  width: var(--sidebar-width);
  position: fixed; top: 0; left: 0; bottom: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  transition: transform 0.25s ease;
}

.sidebar-header {
  padding: 24px 20px 20px;
}

.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 600; color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  font-family: 'JetBrains Mono', monospace;
}

.sidebar-logo {
  width: 22px; height: 22px;
  background: var(--text); color: var(--bg);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 500;
  font-family: 'JetBrains Mono', monospace;
}

.sidebar-nav {
  flex: 1; padding: 0;
  overflow-y: auto;
}

.sidebar-group { margin-bottom: 2px; }

.sidebar-group-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  padding: 20px 20px 6px;
}

.sidebar-item {
  display: block;
  padding: 4px 20px;
  font-size: 13px; font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
  border-left: 2px solid transparent;
}

.sidebar-item:hover {
  color: var(--text);
}

.sidebar-item.active {
  color: var(--text);
  font-weight: 500;
  border-left-color: var(--text);
}

.sidebar-item.coming-soon {
  color: var(--text-tertiary);
  cursor: default;
  font-size: 12px;
}

.sidebar-item.coming-soon::after {
  content: "";
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

/* ═══════ MAIN ═══════ */

.main {
  margin-left: var(--sidebar-width);
  flex: 1; min-height: 100vh;
  display: flex; flex-direction: column;
}

/* ═══════ HEADER ═══════ */

.header {
  height: 44px;
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 40px;
}

.sidebar-toggle {
  display: none; background: none; border: none;
  font-size: 16px; color: var(--text-secondary); cursor: pointer;
}

.header-breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

.header-breadcrumb strong {
  color: var(--text-secondary); font-weight: 500;
}

/* ═══════ CONTENT ═══════ */

.content {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 40px 80px;
  width: 100%;
}

/* ═══════ TOPIC HEADER ═══════ */

.topic-header {
  padding: 0 0 32px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.topic-header h1 {
  font-size: 28px; font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 8px;
}

.topic-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.01em;
  line-height: 1.6;
}

/* ═══════ CONNECTION BAR ═══════ */

.connection-bar {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 32px; padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}

.connection-bar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-right: 6px;
}

.connection-pill {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 12px; font-weight: 400;
  background: var(--tag-bg);
  border: none;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
}

.connection-pill:hover {
  background: rgba(0,0,0,0.08);
  color: var(--text);
  text-decoration: none;
}

.connection-pill .mechanism {
  font-size: 10px;
  color: var(--text-tertiary);
  font-weight: 400;
}

/* ═══════ TYPOGRAPHY ═══════ */

h2 {
  font-size: 18px; font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 48px 0 12px;
  padding-top: 8px;
}

h2:first-of-type { margin-top: 0; }

h3 {
  font-size: 15px; font-weight: 600;
  letter-spacing: -0.01em;
  margin: 28px 0 8px;
}

h4 {
  font-size: 13px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin: 20px 0 6px;
}

p {
  font-size: 14.5px;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.75;
}

a { color: var(--text); text-decoration: underline; text-decoration-color: var(--border-strong); text-underline-offset: 2px; }
a:hover { text-decoration-color: var(--text); }

strong { font-weight: 600; }

/* ═══════ STUDY CARDS ═══════ */

.study-card {
  margin-bottom: 2px;
  border-bottom: 1px solid var(--border);
}

.study-card:last-child { border-bottom: none; }

.study-card-header {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 12px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.study-card-header:hover { opacity: 0.7; }

.study-card-header h3 {
  margin: 0; font-size: 14px; font-weight: 500;
  letter-spacing: -0.01em;
  flex: 1;
}

.study-card-body {
  padding: 0 0 24px;
  display: none;
}

.study-card.open .study-card-body { display: block; }
.study-card .study-card-body h4 { margin: 18px 0 6px; }
.study-card .study-card-body p { font-size: 13.5px; line-height: 1.75; }
.study-card .study-card-body ul { font-size: 13.5px; line-height: 1.75; padding-left: 20px; }

.chevron {
  width: 14px; height: 14px; flex-shrink: 0;
  transition: transform 0.2s;
  color: var(--text-tertiary);
  opacity: 0.5;
}

.study-card.open .chevron { transform: rotate(180deg); }

/* ═══════ EVIDENCE BADGE ═══════ */

.badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  padding: 2px 8px;
  border-radius: 3px;
  white-space: nowrap; flex-shrink: 0;
  letter-spacing: 0.02em;
}

.badge-strong    { background: rgba(45,122,79,0.08);  color: var(--green); }
.badge-moderate  { background: rgba(179,92,0,0.08);   color: var(--orange); }
.badge-emerging  { background: rgba(107,79,160,0.08); color: var(--purple); }
.badge-precautionary { background: rgba(58,111,179,0.08); color: var(--blue); }
.badge-caution   { background: rgba(179,58,58,0.08);  color: var(--red); }

/* ═══════ VERDICT BADGES ═══════ */

.verdict-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}

.verdict-do            { background: rgba(45,122,79,0.10);  color: var(--green); }
.verdict-avoid         { background: rgba(179,58,58,0.10);  color: var(--red); }
.verdict-precautionary { background: rgba(179,92,0,0.10);   color: var(--orange); }
.verdict-watch         { background: rgba(107,79,160,0.10); color: var(--purple); }

/* Topic header verdict placement */
.topic-header .verdict-badge {
  display: inline-flex;
  margin-bottom: 10px;
}

/* Trust tag — inline next to study citations */
.trust-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 1px 6px;
  border-radius: 2px;
  margin-left: 4px;
  vertical-align: middle;
  text-decoration: none;
  white-space: nowrap;
}

.trust-solid {
  background: rgba(45,122,79,0.10);
  color: var(--green);
}

.trust-limited {
  background: rgba(179,92,0,0.10);
  color: var(--orange);
}

.trust-caution {
  background: rgba(179,58,58,0.10);
  color: var(--red);
}

a.trust-tag:hover {
  filter: brightness(0.92);
  text-decoration: none;
}

/* Deep dive badge — inline next to study citations */
.deep-dive-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  background: rgba(28,28,28,0.06);
  color: var(--text);
  margin-left: 6px;
  vertical-align: middle;
  transition: background 0.15s;
}

.deep-dive-badge:hover {
  background: rgba(28,28,28,0.12);
  text-decoration: none;
}

.deep-dive-badge::before {
  content: "⌥ ";
  margin-right: 3px;
  opacity: 0.5;
}

/* Study deep dive page — header style */
.study-header {
  padding: 0 0 32px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.study-header .study-type-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

.study-header h1 {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 12px;
}

.study-citation {
  font-size: 12.5px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-bottom: 14px;
  font-style: italic;
}

.study-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px 24px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.study-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.study-meta-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.study-meta-value {
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

/* ═══════ EVIDENCE DASHBOARD ═══════ */

.dashboard-header {
  padding: 8px 0 32px;
}

.dashboard-header h1 {
  font-size: 24px; font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.35;
  margin-bottom: 10px;
}

.dashboard-header p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.verdict-section {
  margin-bottom: 48px;
}

.verdict-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 8px;
}

.verdict-section-header h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.verdict-section-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-tertiary);
  margin-left: auto;
}

.verdict-section-intro {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
  line-height: 1.6;
  max-width: 560px;
}

.verdict-list {
  display: flex; flex-direction: column;
}

.verdict-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: opacity 0.15s;
}

.verdict-row:first-child {
  border-top: 1px solid var(--border);
}

.verdict-row:hover {
  opacity: 0.6;
  text-decoration: none;
}

.verdict-row h3 {
  font-size: 14.5px; font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
  min-width: 160px;
}

.verdict-row p {
  font-size: 12.5px;
  color: var(--text-tertiary);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

.verdict-row .meta-tags {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.verdict-row .meta-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ═══════ EVIDENCE TABLE ═══════ */

.evidence-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
}

.evidence-table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  padding: 8px 12px 8px 0;
  text-align: left;
  border-bottom: 1px solid var(--border-strong);
}

.evidence-table td {
  padding: 10px 12px 10px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
}

.evidence-table tr:last-child td { border-bottom: none; }

.evidence-table a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
}
.evidence-table a:hover { text-decoration-color: var(--text); }

/* ═══════ CALLOUT ═══════ */

.callout {
  padding: 16px 20px;
  margin: 18px 0;
  border-left: 2px solid var(--border-strong);
  background: transparent;
}

.callout p { margin: 0 0 8px; font-size: 13.5px; }
.callout p:last-child { margin-bottom: 0; }
.callout h4 { margin: 0 0 8px; font-size: 12px; }

.callout-info    { border-left-color: var(--blue); }
.callout-success { border-left-color: var(--green); }
.callout-warning { border-left-color: var(--orange); }
.callout-danger  { border-left-color: var(--red); }

/* ═══════ BLOCKQUOTE ═══════ */

blockquote {
  border-left: 2px solid var(--border-strong);
  padding: 12px 20px;
  margin: 16px 0;
}

blockquote p { font-size: 13.5px; margin-bottom: 6px; color: var(--text-secondary); }
blockquote p:last-child { margin-bottom: 0; }

/* ═══════ PERSONAL PROTOCOL ═══════ */

.protocol-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.protocol-toggle {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
  cursor: pointer;
  user-select: none;
}

.protocol-toggle h2 { margin: 0; cursor: pointer; font-size: 16px; }

.protocol-toggle .toggle-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
}

.protocol-content {
  border-left: 2px solid var(--text);
  padding: 16px 20px;
}

.protocol-content.hidden { display: none; }

.protocol-content p {
  font-size: 14px; color: var(--text);
  line-height: 1.75; margin-bottom: 8px;
}

.protocol-content p:last-child { margin-bottom: 0; }

/* ═══════ REFERENCES ═══════ */

.references-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.references-section h2 {
  font-size: 16px; margin-bottom: 20px;
}

.references-section h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin: 20px 0 8px;
}

.references-section a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 12px;
  display: block;
  padding: 3px 0;
  transition: color 0.15s;
}

.references-section a:hover {
  color: var(--text);
}

/* ═══════ RESPONSIVE ═══════ */

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-md); }
  .main { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .content { padding: 24px 20px 60px; }
  .header { padding: 0 20px; }
  .topic-header h1 { font-size: 22px; }
}