/* ============================================================
   DevPulse — Main Stylesheet
   ============================================================ */

:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2128;
  --border: #30363d;
  --border-subtle: #21262d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-dim: #484f58;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --green: #39d353;
  --green-dark: #006d32;
  --green-mid: #26a641;
  --green-light: #39d353;
  --green-bright: #56e36b;
  --purple: #bc8cff;
  --orange: #f0883e;
  --red: #f85149;
  --gradient-start: #58a6ff;
  --gradient-end: #bc8cff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ── NAV ─────────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
}

.brand-icon { font-size: 1.3rem; }
.brand-name { letter-spacing: -0.02em; }

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
}

.nav-username {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.btn-logout {
  font-size: 0.8rem;
  padding: 0.3rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.2s;
}
.btn-logout:hover {
  border-color: var(--red);
  color: var(--red);
}

/* ── LANDING ─────────────────────────────────────────────── */
.landing-body { background: var(--bg); }

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-preview { display: none; }
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.3);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
  max-width: 480px;
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  background: var(--text);
  color: #000;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  margin-bottom: 1rem;
}
.btn-github:hover {
  background: #fff;
  color: #000;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(230, 237, 243, 0.2);
}

.github-icon { width: 20px; height: 20px; }

.hero-disclaimer {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Preview Card */
.preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.preview-avatar { font-size: 2.5rem; }
.preview-name { font-weight: 700; font-size: 1.1rem; }
.preview-sub { font-size: 0.8rem; color: var(--text-muted); }

.preview-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.preview-stat {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.5rem;
  text-align: center;
}

.preview-stat-value {
  font-weight: 700;
  font-size: 1.1rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
}

.preview-stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.preview-dna {
  background: rgba(188, 140, 255, 0.08);
  border: 1px solid rgba(188, 140, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
}

.preview-dna-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--purple);
  margin-bottom: 0.4rem;
}

.preview-dna-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.preview-heatmap {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

/* Features */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.2s;
}

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

.feature-icon { font-size: 1.8rem; margin-bottom: 0.75rem; }
.feature-card h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

/* ── DASHBOARD ───────────────────────────────────────────── */
.dashboard-body { background: var(--bg); }

.sync-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  background: rgba(88, 166, 255, 0.1);
  border-bottom: 1px solid rgba(88, 166, 255, 0.2);
  font-size: 0.9rem;
  color: var(--accent);
}

.sync-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(88, 166, 255, 0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

.hidden { display: none !important; }

.dashboard-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  transition: opacity 0.3s;
}

/* Profile Header */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.profile-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 3px solid var(--border);
  flex-shrink: 0;
}

.profile-info { flex: 1; }

.profile-name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.profile-link {
  font-size: 0.85rem;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
}

.profile-meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.sync-time { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; }

.btn-sync {
  padding: 0.6rem 1.25rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-sync:hover { border-color: var(--accent); color: var(--accent); }
.btn-sync:disabled { opacity: 0.5; cursor: not-allowed; }

/* Stat Cards */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 1100px) { .stat-cards { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .stat-cards { grid-template-columns: repeat(2, 1fr); } }

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

.stat-icon { font-size: 1.4rem; margin-bottom: 0.5rem; }
.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  letter-spacing: -0.02em;
}
.lang-value { font-size: 1.1rem; }
.stat-label { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Charts */
.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) { .charts-row { grid-template-columns: 1fr; } }

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

.charts-row .chart-card { margin-bottom: 0; }

.chart-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.chart-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-family: 'JetBrains Mono', monospace;
}

/* Heatmap */
.heatmap-card { grid-column: span 1; }

.heatmap-months {
  display: flex;
  gap: 0;
  margin-bottom: 4px;
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  padding-left: 2px;
  overflow: hidden;
}

.heatmap-month-label {
  flex: 1;
  text-align: left;
  min-width: 0;
}

.heatmap-container {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  grid-auto-flow: column;
  gap: 2px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.heatmap-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--bg);
  border: 1px solid var(--border-subtle);
}

.heatmap-cell.level-0 { background: #161b22; border-color: var(--border-subtle); }
.heatmap-cell.level-1 { background: #0e4429; border-color: transparent; }
.heatmap-cell.level-2 { background: #006d32; border-color: transparent; }
.heatmap-cell.level-3 { background: #26a641; border-color: transparent; }
.heatmap-cell.level-4 { background: #39d353; border-color: transparent; }

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.legend-cells {
  display: flex;
  gap: 2px;
}

/* Language chart */
.lang-chart-wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.lang-chart-wrap canvas {
  max-width: 180px;
  max-height: 180px;
}

.lang-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.lang-legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.lang-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.lang-legend-name { flex: 1; color: var(--text); }
.lang-legend-pct { color: var(--text-muted); font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; }

/* Repos Table */
.repos-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.repos-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.repos-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text);
}

.repos-table tr:last-child td { border-bottom: none; }
.repos-table tr:hover td { background: var(--bg-card-hover); }

.table-rank { color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.table-repo-name { font-family: 'JetBrains Mono', monospace; color: var(--accent); }
.table-commits { font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.table-empty { color: var(--text-muted); text-align: center; padding: 1.5rem; }

.activity-bar-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.activity-bar {
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  min-width: 4px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-subtle);
  margin-top: 2rem;
}

/* Chart.js overrides */
canvas { max-width: 100%; }