:root {
  --primary: #2c5f7c;
  --primary-light: #3a7ca5;
  --primary-dark: #1e4258;
  --accent: #e8913a;
  --accent-light: #f0a85c;
  --bg: #f7f8fa;
  --bg-card: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --border: #dfe6e9;
  --seeing: #3a7ca5;
  --doing: #e8913a;
  --being: #6c5ce7;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-light); }

/* Navigation */
.navbar {
  background: var(--primary-dark);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.navbar .logo {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 1rem 0;
  white-space: nowrap;
}

.navbar nav { display: flex; gap: 0; }

.navbar nav a {
  color: rgba(255,255,255,0.8);
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
  border-bottom: 3px solid transparent;
}

.navbar nav a:hover,
.navbar nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
  border-bottom-color: var(--accent);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 4rem 2rem;
  text-align: center;
}

.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; font-weight: 700; }
.hero p { font-size: 1.15rem; opacity: 0.9; max-width: 600px; margin: 0 auto; }

/* Page header */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 2.5rem 2rem;
}

.page-header h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.page-header p { opacity: 0.85; font-size: 1.05rem; }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 2rem; }

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: box-shadow 0.2s, transform 0.2s;
  cursor: pointer;
  border-left: 4px solid var(--primary);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card.layer-seeing { border-left-color: var(--seeing); }
.card.layer-doing { border-left-color: var(--doing); }
.card.layer-being { border-left-color: var(--being); }

.card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.card p { color: var(--text-light); font-size: 0.9rem; }

.card .layer-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.layer-badge.seeing { background: rgba(58,124,165,0.12); color: var(--seeing); }
.layer-badge.doing { background: rgba(232,145,58,0.12); color: var(--doing); }
.layer-badge.being { background: rgba(108,92,231,0.12); color: var(--being); }

/* Detail panel */
.detail-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-bottom: 2rem;
}

.detail-panel h2 { margin-bottom: 0.5rem; }

.detail-section { margin-top: 1.5rem; }
.detail-section h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tag {
  display: inline-block;
  background: rgba(44,95,124,0.08);
  color: var(--primary);
  padding: 0.3rem 0.75rem;
  border-radius: 16px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.tag:hover { background: rgba(44,95,124,0.15); }

/* Home sections */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  text-align: center;
}

.feature-card .icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.feature-card p { color: var(--text-light); font-size: 0.9rem; }

/* Role profile */
.role-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.role-btn {
  padding: 0.6rem 1.25rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
  color: var(--text);
}

.role-btn:hover { border-color: var(--primary-light); color: var(--primary); }
.role-btn.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.role-detail { display: none; }
.role-detail.active { display: block; }

.competency-bar {
  display: flex;
  align-items: center;
  margin-bottom: 0.75rem;
}

.competency-bar .label {
  width: 240px;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.competency-bar .bar-track {
  flex: 1;
  height: 24px;
  background: var(--bg);
  border-radius: 12px;
  overflow: hidden;
  margin: 0 0.75rem;
}

.competency-bar .bar-fill {
  height: 100%;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transition: width 0.5s ease;
}

.competency-bar .level-text {
  font-size: 0.8rem;
  color: var(--text-light);
  width: 80px;
  text-align: right;
  flex-shrink: 0;
}

/* Assessment */
.assessment-form { max-width: 700px; }

.assessment-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.assessment-item h4 { margin-bottom: 0.25rem; }
.assessment-item p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 0.75rem; }

.rating-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.rating-group label {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  cursor: pointer;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.rating-group label:hover { border-color: var(--primary-light); }

.rating-group input[type="radio"] { display: none; }
.rating-group input[type="radio"]:checked + span {
  color: #fff;
}
.rating-group label:has(input:checked) {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 1rem;
}

.btn:hover { background: var(--accent-light); color: #fff; }

/* Results */
.results-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-top: 2rem;
  display: none;
}

.results-panel.visible { display: block; }

.results-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

.strength-list, .development-list { list-style: none; }
.strength-list li, .development-list li {
  padding: 0.4rem 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}
.strength-list li::before { content: "\2713 "; color: #27ae60; font-weight: bold; }
.development-list li::before { content: "\25b6 "; color: var(--accent); }

canvas#radarChart {
  max-width: 450px;
  max-height: 450px;
  margin: 0 auto;
  display: block;
}

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-light);
}
.back-link:hover { color: var(--primary); }

/* Use cases */
.use-case-list {
  list-style: none;
  margin-top: 0.5rem;
}
.use-case-list li {
  padding: 0.3rem 0;
  font-size: 0.9rem;
  color: var(--text-light);
}
.use-case-list li::before {
  content: "\2022 ";
  color: var(--accent);
  font-weight: bold;
}

/* Framework basis */
.framework-basis {
  margin-top: 2rem;
  padding: 1.5rem;
  background: rgba(44,95,124,0.04);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary-light);
}

.framework-basis h3 {
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.source-ref-list {
  list-style: none;
  margin-top: 0.25rem;
}

.source-ref-list li {
  padding: 0.35rem 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.source-ref-list li:last-child { border-bottom: none; }
.source-ref-list li a { color: var(--primary); }
.source-ref-list li a:hover { color: var(--primary-light); }

.sources-page-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--primary);
}

/* Sources page */
.source-category-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.source-category-item:last-child { border-bottom: none; }
.source-category-item h4 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.source-category-item p { font-size: 0.9rem; color: var(--text-light); }

.source-highlight-card {
  background: rgba(44,95,124,0.04);
  border-left: 4px solid var(--primary-light);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.source-highlight-card h4 { font-size: 0.95rem; margin-bottom: 0.4rem; color: var(--primary-dark); }
.source-highlight-card p { font-size: 0.9rem; color: var(--text-light); }

.source-principle-list {
  list-style: none;
  margin-top: 0.75rem;
}

.source-principle-list li {
  padding: 0.4rem 0;
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.9rem;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
}

.source-principle-list li:last-child { border-bottom: none; }

.source-principle-list li::before {
  content: "\2022";
  color: var(--primary);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.source-excluded-list li::before { color: var(--text-light); }

.source-category-block {
  margin-bottom: 2rem;
}

.source-category-block h3 {
  font-size: 1.1rem;
  color: var(--primary-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-light);
}

.source-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
}

.source-card h4 { font-size: 0.95rem; margin-bottom: 0.3rem; }
.source-card p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 0.5rem; }

.source-link {
  font-size: 0.8rem;
  color: var(--primary);
  word-break: break-all;
}

.source-link:hover { color: var(--primary-light); }

@media (max-width: 768px) {
  #included-excluded { grid-template-columns: 1fr !important; }
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-light);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar { flex-wrap: wrap; }
  .navbar nav { display: none; flex-direction: column; width: 100%; }
  .navbar nav.open { display: flex; }
  .hamburger { display: block; }
  .navbar nav a { padding: 0.75rem 1rem; border-bottom: none; border-left: 3px solid transparent; }
  .navbar nav a:hover, .navbar nav a.active { border-left-color: var(--accent); }
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 2.5rem 1.5rem; }
  .container { padding: 1.5rem; }
  .card-grid { grid-template-columns: 1fr; }
  .results-columns { grid-template-columns: 1fr; }
  .competency-bar .label { width: 160px; }
}