/* DataSage Results Dashboard — Dark Theme Design System */

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #1e2a45;
  --bg-card-hover: #243352;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --border: #2a2a4a;
  --border-light: #3a3a5a;

  --accent-cleaning: #F59E0B;
  --accent-enrichment: #EF4444;
  --accent-answering: #3B82F6;
  --accent-green: #10B981;
  --accent-pink: #EC4899;
  --accent-purple: #7C3AED;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent-cleaning), var(--accent-answering));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-primary); text-decoration: none; }

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* Typography */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; }

.section-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}

/* Hero */
.hero {
  padding: 8rem 0 5rem;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-cleaning), var(--accent-enrichment), var(--accent-answering));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  max-width: 700px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-light);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-answering);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

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

.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.card-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.card-metric-label { color: var(--text-secondary); }
.card-metric-value { font-weight: 700; font-family: var(--font-mono); }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Pipeline */
.pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.pipeline-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

.pipeline-arrow {
  color: var(--text-muted);
  font-size: 1.25rem;
  padding: 0 0.5rem;
}

/* Charts */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.chart-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.chart-note {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.5rem;
  font-style: italic;
}

.chart-wrapper {
  position: relative;
  width: 100%;
}

.charts-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

/* Heatmap Table */
.heatmap-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.heatmap-table th,
.heatmap-table td {
  padding: 0.75rem 1rem;
  text-align: center;
  border: 1px solid var(--border);
}

.heatmap-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.heatmap-table td {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
}

.heatmap-table td.domain-label {
  text-align: left;
  font-family: var(--font-sans);
  text-transform: capitalize;
  color: var(--text-secondary);
}

/* Q&A Showcase */
.qa-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.qa-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.qa-meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.qa-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.qa-badge.domain { background: rgba(59, 130, 246, 0.2); color: var(--accent-answering); }
.qa-badge.persona { background: rgba(124, 58, 237, 0.2); color: var(--accent-purple); }
.qa-badge.model { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }

.qa-reward {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
}

.qa-question {
  font-weight: 600;
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.qa-answer {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-answering);
}

.qa-columns {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.qa-columns span {
  display: inline-block;
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-cleaning);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  margin: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* Training Config */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.config-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.config-key { color: var(--text-secondary); }
.config-val { font-weight: 600; font-family: var(--font-mono); }

/* Links Section */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  transition: border-color 0.2s, transform 0.2s;
}

.link-card:hover {
  border-color: var(--accent-answering);
  transform: translateY(-1px);
  text-decoration: none;
}

.link-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.link-text { font-weight: 600; font-size: 0.9rem; }
.link-sub { font-size: 0.75rem; color: var(--text-secondary); }

/* Badges */
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
  justify-content: center;
}

.tech-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Improvement Badge */
.improvement {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--accent-green);
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.improvement.negative { color: var(--accent-enrichment); }

/* Loading */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-muted);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-answering);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.75rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.footer {
  padding: 3rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .container { padding: 0 1rem; }
  section { padding: 3rem 0; }
  .hero { padding: 5rem 0 3rem; }
  .hero-title { font-size: 2rem; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .pipeline { flex-direction: column; gap: 0.5rem; }
  .pipeline-arrow { transform: rotate(90deg); }
  .charts-row { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .charts-row { grid-template-columns: repeat(2, 1fr); }
}