/* Course Companion Site — Shared Styles */
@import url('https://fonts.googleapis.com/css2?family=Rethink+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=DM+Mono:wght@400;500&display=swap');

:root {
  --navy: #004071;
  --sky: #418FDE;
  --green: #4A8C1C;
  --gold: #B9975B;
  --cream: #faf8f5;
  --dark: #222;
  --mid: #666;
  --light-gray: #e8e6e2;
  --card-bg: #fff;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --red: #C0392B;
  --page-pad: 1.5rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Rethink Sans', sans-serif;
  background: var(--cream);
  color: var(--dark);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

code, .mono {
  font-family: 'DM Mono', monospace;
  font-size: 0.85em;
}

a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.page { width: 100%; max-width: 1200px; margin: 0 auto; padding: var(--page-pad); }

/* Header */
.site-header {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.8rem 1.5rem;
  background: var(--navy);
  color: white;
  position: sticky; top: 0; z-index: 100;
  flex-wrap: wrap;
}
.site-header .logo {
  font-size: 1rem; font-weight: 600;
  white-space: nowrap;
}
.site-header .logo a { color: white; }
.site-header .logo a:hover { text-decoration: none; opacity: 0.85; }
.site-header nav {
  display: flex; gap: 0.3rem; margin-left: auto;
  flex-wrap: wrap;
}
.site-header nav a {
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem; font-weight: 500;
  padding: 0.25rem 0.6rem; border-radius: 6px;
  transition: all 0.15s;
  white-space: nowrap;
}
.site-header nav a:hover, .site-header nav a.active {
  color: white; background: rgba(255,255,255,0.15);
  text-decoration: none;
}

/* Hero */
.hero {
  background: var(--navy);
  color: white;
  padding: 3rem var(--page-pad);
  text-align: center;
  margin: calc(-1 * var(--page-pad)) calc(-1 * var(--page-pad)) 2rem;
}
.hero h1 { font-size: 2rem; font-weight: 700; margin-bottom: 0.3rem; }
.hero .subtitle {
  font-size: 1rem; font-weight: 400;
  color: rgba(255,255,255,0.7); margin-bottom: 0.8rem;
}
.hero .meta {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem; color: var(--gold);
}

/* Section headers */
h2 {
  font-size: 1.4rem; font-weight: 600;
  color: var(--navy);
  margin: 2rem 0 1rem;
}
h3 {
  font-size: 1.1rem; font-weight: 600;
  color: var(--navy);
  margin: 1.2rem 0 0.5rem;
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  transition: all 0.2s;
}
.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.12); }

/* Card grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: 1rem;
}
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: 1rem;
}

/* Tags / badges */
.tag {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; font-weight: 500;
  padding: 2px 8px; border-radius: 4px;
}
.tag-navy { background: var(--navy); color: white; }
.tag-sky { background: rgba(65,143,222,0.15); color: var(--sky); }
.tag-green { background: rgba(74,140,28,0.15); color: var(--green); }
.tag-gold { background: rgba(185,151,91,0.15); color: var(--gold); }
.tag-red { background: rgba(192,57,43,0.12); color: var(--red); }

/* Status badges */
.badge {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem; font-weight: 500;
  padding: 2px 8px; border-radius: 10px;
}
.badge-done { background: rgba(74,140,28,0.15); color: var(--green); }
.badge-wip { background: rgba(185,151,91,0.2); color: #8a7340; }
.badge-todo { background: var(--light-gray); color: var(--mid); }

/* Course arc */
.arc {
  display: flex; align-items: center; gap: 0;
  margin: 2rem 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}
.arc-step {
  flex: 1; min-width: 140px;
  text-align: center; padding: 0.8rem 0.5rem;
  position: relative;
  font-size: 0.85rem; font-weight: 500;
}
.arc-step .num {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; color: var(--gold);
  display: block; margin-bottom: 0.2rem;
}
.arc-step::after {
  content: '\2192'; position: absolute; right: -8px; top: 50%;
  transform: translateY(-50%); color: var(--light-gray); font-size: 1.2rem;
}
.arc-step:last-child::after { display: none; }

/* Section cards (course pages) */
.section-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  border-left: 4px solid var(--navy);
  transition: all 0.2s;
  text-decoration: none; color: inherit;
  display: block;
}
.section-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  text-decoration: none;
}
.section-card .s-num {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem; color: var(--gold);
}
.section-card .s-title { font-weight: 600; font-size: 1rem; margin: 0.2rem 0; }
.section-card .s-desc { font-size: 0.85rem; color: var(--mid); }
.section-card .s-slides {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; color: var(--sky); margin-top: 0.4rem;
}

/* Tool cards (landing page) */
.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.2rem;
  border-top: 3px solid var(--sky);
  transition: all 0.2s;
  text-decoration: none; color: inherit;
  display: block;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  text-decoration: none;
}
.tool-card .t-icon {
  font-size: 1.3rem; margin-bottom: 0.3rem;
}
.tool-card .t-name { font-weight: 600; font-size: 0.95rem; }
.tool-card .t-desc { font-size: 0.8rem; color: var(--mid); margin-top: 0.2rem; }

/* Tables */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1rem;
}
.data-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.85rem;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  min-width: 480px;
}
.data-table th {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  text-align: left; padding: 0.6rem 0.8rem;
  background: var(--navy); color: white;
}
.data-table td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--light-gray);
  vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(65,143,222,0.04); }

/* Expandable sections */
.expandable { cursor: pointer; }
.expandable::after {
  content: ' +'; font-family: 'DM Mono', monospace;
  font-size: 0.8em; color: var(--sky);
}
.expandable.open::after { content: ' −'; }
.expand-content {
  display: none; padding: 0.8rem 0 0;
}
.expand-content.open { display: block; }

/* Filter bar */
.filter-bar {
  display: flex; gap: 0.4rem;
  margin: 1rem 0;
  flex-wrap: wrap;
}
.filter-btn {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  padding: 0.3rem 0.8rem; border-radius: 6px;
  border: 1px solid var(--light-gray);
  background: white; color: var(--mid);
  cursor: pointer; transition: all 0.15s;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--navy); color: white;
  border-color: var(--navy);
}

/* Tree (HiTOP) */
.tree { padding-left: 0; }
.tree ul { padding-left: 1.5rem; border-left: 2px solid var(--light-gray); margin-left: 0.5rem; }
.tree li {
  list-style: none;
  padding: 0.4rem 0;
  font-size: 0.9rem;
}
.tree-node {
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: background 0.15s;
  display: inline-block;
}
.tree-node:hover { background: rgba(65,143,222,0.08); }
.tree-node.active { background: rgba(65,143,222,0.12); font-weight: 600; }
.tree-node .toggle {
  font-family: 'DM Mono', monospace;
  font-size: 0.7em; color: var(--sky);
  margin-right: 0.3rem;
}

/* Node detail panel */
.node-detail {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-top: 1rem;
  border-left: 4px solid var(--sky);
}
.node-detail h3 { margin-top: 0; }
.node-detail .detail-row {
  margin: 0.6rem 0;
  font-size: 0.88rem;
}
.node-detail .detail-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem; color: var(--mid);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

/* Circuit cards */
.circuit-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  border-top: 4px solid var(--navy);
  margin-bottom: 1rem;
}
.circuit-card h3 { margin-top: 0; font-size: 1.05rem; }
.circuit-card .nodes {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin: 0.5rem 0;
}
.circuit-card .node-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem; padding: 2px 8px;
  border-radius: 4px;
  background: var(--cream); color: var(--navy);
}
.circuit-card .circuit-row {
  display: flex; gap: 1rem; margin-top: 0.6rem;
  font-size: 0.85rem; flex-wrap: wrap;
}
.circuit-card .circuit-row dt {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem; color: var(--mid);
  min-width: 100px;
}
.circuit-card .circuit-row dd { flex: 1; min-width: 200px; }

/* Pharma palier visualization */
.palier-track {
  display: flex; gap: 0;
  margin: 1.5rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.palier-step {
  flex: 1; padding: 1rem;
  text-align: center;
  font-size: 0.82rem;
  color: white;
}
.palier-step .p-num {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; opacity: 0.7;
  display: block; margin-bottom: 0.2rem;
}
.palier-step .p-label { font-weight: 600; }
.palier-step .p-detail { font-size: 0.75rem; opacity: 0.8; margin-top: 0.2rem; }

/* Case card */
.case-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  border-left: 4px solid var(--gold);
}
.case-card h3 { margin-top: 0; }
.case-card .case-meta {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem; color: var(--mid);
  margin-bottom: 0.8rem;
}
.case-card .dx-compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  margin: 0.8rem 0;
}
.case-card .dx-col h4 {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem; margin-bottom: 0.4rem;
}
.case-card .dx-col ul {
  padding-left: 1rem; font-size: 0.85rem;
}
.case-card .dx-col li { margin: 0.2rem 0; }

/* Reading card */
.reading-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.2rem;
  margin-bottom: 0.6rem;
}
.reading-card .r-citation { font-size: 0.88rem; font-weight: 500; }
.reading-card .r-why { font-size: 0.82rem; color: var(--mid); margin-top: 0.2rem; }
.reading-card .r-tags { margin-top: 0.4rem; }

/* Glossary */
.glossary-list { }
.glossary-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.2rem;
  margin-bottom: 0.6rem;
}
.glossary-item .g-term {
  font-weight: 600; font-size: 1rem;
  color: var(--navy);
}
.glossary-item .g-def { font-size: 0.88rem; margin-top: 0.2rem; }
.glossary-item .g-related {
  font-size: 0.78rem; color: var(--mid); margin-top: 0.3rem;
}

/* Profile builder sliders */
.slider-group { margin: 0.6rem 0; }
.slider-group label {
  display: flex; justify-content: space-between;
  font-size: 0.85rem; font-weight: 500;
  margin-bottom: 0.2rem;
}
.slider-group label .val {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem; color: var(--sky);
}
.slider-group input[type="range"] {
  width: 100%; accent-color: var(--navy);
}

/* Bar chart (profile) */
.bar-chart { margin: 1rem 0; }
.bar-row {
  display: flex; align-items: center; gap: 0.5rem;
  margin: 0.3rem 0;
}
.bar-row .bar-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  min-width: 100px; text-align: right;
}
.bar-row .bar-track {
  flex: 1; height: 22px;
  background: var(--light-gray);
  border-radius: 4px; overflow: hidden;
  position: relative;
}
.bar-row .bar-track > span {
  display: block;
}
.bar-row .bar-fill {
  display: block;
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
}
.bar-row .bar-val {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem; min-width: 30px;
}

/* Severity colors */
.sev-low { background: var(--green); }
.sev-mod { background: var(--gold); }
.sev-high { background: var(--navy); }
.sev-severe { background: var(--red); }

/* Timing block */
.timing {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  display: flex; gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.timing-block { flex: 1; min-width: 200px; }
.timing-block h4 {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem; color: var(--navy);
  margin-bottom: 0.4rem;
}
.timing-block ul { padding-left: 1rem; }
.timing-block li { font-size: 0.85rem; margin: 0.3rem 0; }

/* Responsive — 1024px medium screens */
@media (max-width: 1024px) {
  :root { --page-pad: 1.2rem; }
  .site-header nav a { font-size: 0.72rem; padding: 0.2rem 0.5rem; }
  .hero h1 { font-size: 1.7rem; }
  .palier-step { padding: 0.8rem 0.4rem; font-size: 0.78rem; }
}

/* Responsive — 768px small screens */
@media (max-width: 768px) {
  :root { --page-pad: 1rem; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid-3 { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 1.5rem; }
  .hero { padding: 2rem var(--page-pad); }
  .site-header { padding: 0.6rem 1rem; }
  .site-header nav a { font-size: 0.7rem; padding: 0.2rem 0.45rem; }
  .dx-compare { grid-template-columns: 1fr !important; }
  .arc { flex-wrap: nowrap; }
  .arc-step { min-width: 110px; font-size: 0.78rem; }
  .palier-track { flex-direction: column; }
  .palier-step { padding: 0.7rem; }
  .timing { gap: 1rem; }
  .timing-block { min-width: 100%; }
  .circuit-card .circuit-row { flex-direction: column; gap: 0.3rem; }
  .circuit-card .circuit-row dt { min-width: auto; }
  .bar-row .bar-label { min-width: 70px; font-size: 0.68rem; }
}

/* Responsive — 480px extra-small screens */
@media (max-width: 480px) {
  :root { --page-pad: 0.75rem; }
  .card-grid-3 { grid-template-columns: 1fr; }
  .site-header { gap: 0.5rem; }
  .site-header .logo { font-size: 0.88rem; }
  .site-header nav { gap: 0.15rem; width: 100%; margin-left: 0; }
  .site-header nav a { font-size: 0.65rem; padding: 0.2rem 0.35rem; }
  .hero h1 { font-size: 1.25rem; }
  .hero .subtitle { font-size: 0.88rem; }
  h2 { font-size: 1.2rem; }
  h3 { font-size: 1rem; }
  .arc-step { min-width: 90px; font-size: 0.72rem; padding: 0.5rem 0.3rem; }
  .case-card .dx-compare { gap: 0.5rem; }
  .form-row { flex-direction: column; gap: 0.2rem; }
  .form-label { min-width: auto; }
}