/* =============================================================================
   Project Peerless — Custom Theme
   Blue-violet palette, Space Grotesk headings, Inter body text.
   Overrides Pico CSS v2 classless defaults.
   ============================================================================= */

/* ---------------------------------------------------------------------------
   1. CSS Custom Properties (brand colours + typography tokens)
   --------------------------------------------------------------------------- */

:root {
  /* Brand palette — blue-violet spectrum */
  --color-primary:        #5b7ff1;
  --color-primary-hover:  #4060d4;
  --color-primary-muted:  #3a4fa8;
  --color-accent:         #7c5cbf;
  --color-accent-muted:   #5e4499;

  /* Semantic surface colours (light mode defaults) */
  --color-bg:             #f6f8ff;
  --color-bg-card:        #ffffff;
  --color-bg-nav:         rgba(246, 248, 255, 0.85);
  --color-border:         #dde2f5;
  --color-text:           #1a1f3a;
  --color-text-muted:     #5a6282;
  --color-text-subtle:    #8892b0;

  /* Review badge palette */
  --badge-approved-bg:    #dcfce7;
  --badge-approved-fg:    #166534;
  --badge-changes-bg:     #fef9c3;
  --badge-changes-fg:     #854d0e;
  --badge-pending-bg:     #f1f5f9;
  --badge-pending-fg:     #475569;
  --badge-dismissed-bg:   #fee2e2;
  --badge-dismissed-fg:   #991b1b;
  --badge-commented-bg:   #dbeafe;
  --badge-commented-fg:   #1e40af;

  /* Shadow tokens */
  --shadow-sm:            0 1px 3px rgba(91, 127, 241, 0.08);
  --shadow-md:            0 4px 16px rgba(91, 127, 241, 0.12);
  --shadow-lg:            0 8px 32px rgba(91, 127, 241, 0.18);

  /* Radius tokens */
  --radius-sm:            6px;
  --radius-md:            10px;
  --radius-lg:            16px;

  /* Typography */
  --font-heading:         'Space Grotesk', system-ui, sans-serif;
  --font-body:            'Inter', system-ui, sans-serif;

  /* Layout */
  --nav-height:           64px;
  --sidebar-width:        260px;
  --content-max:          1200px;
}

/* Dark mode overrides */
[data-theme="dark"] {
  --color-bg:             #0d1117;
  --color-bg-card:        #161b27;
  --color-bg-nav:         rgba(13, 17, 23, 0.90);
  --color-border:         #2a3151;
  --color-text:           #e6eaf7;
  --color-text-muted:     #8892b0;
  --color-text-subtle:    #5a6282;

  --badge-approved-bg:    #14532d;
  --badge-approved-fg:    #86efac;
  --badge-changes-bg:     #713f12;
  --badge-changes-fg:     #fef08a;
  --badge-pending-bg:     #1e293b;
  --badge-pending-fg:     #94a3b8;
  --badge-dismissed-bg:   #7f1d1d;
  --badge-dismissed-fg:   #fca5a5;
  --badge-commented-bg:   #1e3a8a;
  --badge-commented-fg:   #93c5fd;

  --shadow-sm:            0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md:            0 4px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg:            0 8px 32px rgba(0, 0, 0, 0.55);
}

/* ---------------------------------------------------------------------------
   2. Base / Pico overrides
   --------------------------------------------------------------------------- */

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  padding-top: var(--nav-height);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ---------------------------------------------------------------------------
   3. Navigation bar
   --------------------------------------------------------------------------- */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1.5rem;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary) !important;
  text-decoration: none !important;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.nav-actions form {
  margin: 0;
}

.nav-actions button[type="submit"] {
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.nav-actions button[type="submit"]:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ---------------------------------------------------------------------------
   4. Theme toggle button
   --------------------------------------------------------------------------- */

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: border-color 0.15s, color 0.15s;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ---------------------------------------------------------------------------
   5. Hero section
   --------------------------------------------------------------------------- */

.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, rgba(91, 127, 241, 0.05) 100%);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff !important;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-md);
  border: none;
  text-decoration: none !important;
  box-shadow: var(--shadow-md);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
  width: 100%;
  max-width: 800px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: left;
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ---------------------------------------------------------------------------
   6. Dashboard layout — two-column with sidebar on large screens
   --------------------------------------------------------------------------- */

.dashboard-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: 2rem;
  max-width: var(--content-max);
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.dashboard-main {
  min-width: 0; /* prevent grid blowout */
}

/* ---------------------------------------------------------------------------
   7. Stat cards grid (MetricsPanel)
   --------------------------------------------------------------------------- */

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-subtle);
}

.stat-card-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.stat-card-sub {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------------
   8. Hygiene score ring (.score-ring)
   --------------------------------------------------------------------------- */

.score-ring-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.score-ring {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  /* The --score CSS variable (in degrees) is set via inline style by Rust */
  background: conic-gradient(
    var(--color-primary) 0deg var(--score, 0deg),
    var(--color-border) var(--score, 0deg) 360deg
  );
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.score-ring::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-bg-card);
}

.score-ring-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  position: relative;
  z-index: 1;
}

.score-ring-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------------------------
   9. PR card (.pr-card)
   --------------------------------------------------------------------------- */

.pr-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-left-color 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

/* Accent left-border by review state */
.pr-card[data-state="approved"]           { border-left-color: var(--badge-approved-fg); }
.pr-card[data-state="changes_requested"]  { border-left-color: var(--badge-changes-fg); }
.pr-card[data-state="pending"]            { border-left-color: var(--badge-pending-fg); }
.pr-card[data-state="dismissed"]          { border-left-color: var(--badge-dismissed-fg); }
.pr-card[data-state="commented"]          { border-left-color: var(--badge-commented-fg); }

.pr-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.pr-card-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.pr-card-reviewers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

/* ---------------------------------------------------------------------------
   10. Review badges
   --------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  line-height: 1.4;
  white-space: nowrap;
}

.badge-approved   { background: var(--badge-approved-bg);   color: var(--badge-approved-fg); }
.badge-changes    { background: var(--badge-changes-bg);    color: var(--badge-changes-fg); }
.badge-pending    { background: var(--badge-pending-bg);    color: var(--badge-pending-fg); }
.badge-dismissed  { background: var(--badge-dismissed-bg);  color: var(--badge-dismissed-fg); }
.badge-commented  { background: var(--badge-commented-bg);  color: var(--badge-commented-fg); }

/* ---------------------------------------------------------------------------
   11. Table enhancements (leaderboard)
   --------------------------------------------------------------------------- */

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.leaderboard-table thead th {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-subtle);
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--color-border);
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

.leaderboard-table thead th:hover {
  color: var(--color-primary);
}

.leaderboard-table thead th.sort-active {
  color: var(--color-primary);
}

.leaderboard-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background 0.1s ease;
}

.leaderboard-table tbody tr:hover {
  background: rgba(91, 127, 241, 0.04);
}

.leaderboard-table td {
  padding: 0.75rem 1rem;
  vertical-align: middle;
}

.leaderboard-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  vertical-align: middle;
  margin-right: 0.5rem;
  border: 1px solid var(--color-border);
}

.rank-cell {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  width: 3rem;
}

/* ---------------------------------------------------------------------------
   12. Filter controls (dashboard)
   --------------------------------------------------------------------------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.filter-bar label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.filter-bar select {
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
}

/* ---------------------------------------------------------------------------
   13. Pagination
   --------------------------------------------------------------------------- */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.pagination button {
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
  font-size: 0.875rem;
  transition: border-color 0.15s, color 0.15s;
}

.pagination button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---------------------------------------------------------------------------
   14. Loading spinner
   --------------------------------------------------------------------------- */

.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem;
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ---------------------------------------------------------------------------
   15. Not-found / empty state
   --------------------------------------------------------------------------- */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 4rem 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
}

.empty-state h2 {
  font-size: 1.5rem;
  color: var(--color-text);
}

/* ---------------------------------------------------------------------------
   16. Page content wrapper
   --------------------------------------------------------------------------- */

.page-content {
  max-width: var(--content-max);
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* ---------------------------------------------------------------------------
   17. Responsive overrides
   --------------------------------------------------------------------------- */

@media (max-width: 768px) {
  .dashboard-layout {
    grid-template-columns: 1fr;
  }

  nav {
    padding: 0 1rem;
    gap: 0.75rem;
  }

  .nav-links a {
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .leaderboard-table {
    font-size: 0.8rem;
  }

  .leaderboard-table td,
  .leaderboard-table th {
    padding: 0.6rem 0.5rem;
  }
}

@media (max-width: 480px) {
  .stat-cards {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}