/* ── CSS Custom Properties (Light theme default) ───────────────────────────── */
:root {
  --bg:          #f1f5f9;
  --surface:     #ffffff;
  --surface-2:   #f8fafc;
  --border:      #e2e8f0;
  --border-2:    #cbd5e1;
  --text:        #1e293b;
  --text-muted:  #6b7280;
  --text-faint:  #94a3b8;
  --nav-bg:      #1e293b;
  --nav-text:    #94a3b8;
  --nav-active:  rgba(255,255,255,.15);
  --nav-hover:   rgba(255,255,255,.08);
  --accent:      #2563eb;
  --accent-hover:#1d4ed8;
  --accent-ring: rgba(37,99,235,.1);
  --shadow:      0 1px 3px rgba(0,0,0,.06);
  --shadow-md:   0 4px 12px rgba(0,0,0,.08);
  --row-hover:   #f8fafc;
  --row-expand:  #f0f9ff;
  --table-head:  #f8fafc;
}

[data-theme="dark"] {
  --bg:          #0f172a;
  --surface:     #1e293b;
  --surface-2:   #263348;
  --border:      #334155;
  --border-2:    #475569;
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-faint:  #64748b;
  --nav-bg:      #020817;
  --nav-text:    #64748b;
  --nav-active:  rgba(255,255,255,.12);
  --nav-hover:   rgba(255,255,255,.06);
  --accent:      #3b82f6;
  --accent-hover:#2563eb;
  --accent-ring: rgba(59,130,246,.2);
  --shadow:      0 1px 3px rgba(0,0,0,.3);
  --shadow-md:   0 4px 12px rgba(0,0,0,.4);
  --row-hover:   #263348;
  --row-expand:  #1e3a5f;
  --table-head:  #263348;
}

/* ── Reset & base ────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px; color: var(--text); background: var(--bg); min-height: 100vh;
  transition: background .2s, color .2s;
}

/* ── Nav ──────────────────────────────────────────────────────────────────────── */
nav {
  display: flex; align-items: center; gap: 4px;
  background: var(--nav-bg); padding: 0 16px; height: 44px;
  position: sticky; top: 0; z-index: 100;
}
.brand { font-weight: 700; font-size: 15px; color: #fff; margin-right: 12px;
         letter-spacing: -.3px; }
nav a { color: var(--nav-text); text-decoration: none; font-size: 12px; font-weight: 500;
        padding: 6px 10px; border-radius: 6px; transition: all .15s; }
nav a:hover { color: #fff; background: var(--nav-hover); }
nav a.active { color: #fff; background: var(--nav-active); }

/* Theme toggle button */
.theme-toggle {
  margin-left: auto; background: none; border: 1px solid var(--border-2);
  border-radius: 20px; padding: 4px 10px; cursor: pointer;
  color: var(--nav-text); font-size: 12px; display: flex; align-items: center;
  gap: 5px; transition: all .15s; white-space: nowrap;
}
.theme-toggle:hover { background: var(--nav-hover); color: #fff; }
.theme-toggle .icon { font-size: 14px; }

/* reviewer label (pushed right by theme-toggle's margin-left: auto when no toggle) */
.nav-reviewer { color: var(--nav-text); font-size: 11px; }
.nav-reviewer a { color: var(--nav-text); margin-left: 6px; }

/* ── Buttons ──────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 5px; padding: 5px 12px;
  font-size: 12px; font-weight: 600; border-radius: 6px; border: 1px solid transparent;
  cursor: pointer; transition: all .15s; white-space: nowrap;
}
.btn-primary   { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); border-color: var(--border-2); }
.btn-green  { background: #16a34a; color: #fff; border-color: #16a34a; }
.btn-green:hover { background: #15803d; }
.btn-red    { background: #dc2626; color: #fff; border-color: #dc2626; }
.btn-red:hover { background: #b91c1c; }

/* ── Pills ────────────────────────────────────────────────────────────────────── */
.pill { display: inline-block; padding: 2px 8px; border-radius: 99px;
        font-size: 11px; font-weight: 600; }
.pill-green  { background: #dcfce7; color: #166534; }
.pill-red    { background: #fee2e2; color: #991b1b; }
.pill-yellow { background: #fef3c7; color: #92400e; }
.pill-blue   { background: #dbeafe; color: #1d4ed8; }
.pill-purple { background: #f3e8ff; color: #7e22ce; }
.pill-gray   { background: var(--surface-2); color: var(--text-muted); }

[data-theme="dark"] .pill-green  { background: #14532d; color: #86efac; }
[data-theme="dark"] .pill-red    { background: #7f1d1d; color: #fca5a5; }
[data-theme="dark"] .pill-yellow { background: #78350f; color: #fcd34d; }
[data-theme="dark"] .pill-blue   { background: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .pill-purple { background: #3b0764; color: #d8b4fe; }

/* ── Dots ─────────────────────────────────────────────────────────────────────── */
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-green  { background: #16a34a; }
.dot-orange { background: #ea580c; }
.dot-blue   { background: #2563eb; }
.dot-gray   { background: #9ca3af; }
.dot-yellow { background: #f59e0b; }

/* ── Page wrapper ─────────────────────────────────────────────────────────────── */
.page { max-width: 1100px; margin: 0 auto; padding: 20px 16px; }

/* ── Cards ────────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow);
}

/* ── Forms ────────────────────────────────────────────────────────────────────── */
input[type=text], textarea, select {
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px;
  font-size: 12px; font-family: inherit; color: var(--text);
  background: var(--surface); transition: border-color .15s; width: 100%;
}
input[type=text]:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
textarea { resize: vertical; }

/* ── Tables ───────────────────────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 12px; }
.data-table th {
  padding: 8px 12px; text-align: left; background: var(--table-head);
  font-weight: 600; color: var(--text-muted); font-size: 11px;
  text-transform: uppercase; border-bottom: 2px solid var(--border);
}
.data-table td { padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--row-hover); }
.data-table tr.expanded td { background: var(--row-expand); }

/* ── KPI cards (dashboard) ────────────────────────────────────────────────────── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px,1fr)); gap: 12px; }
.kpi-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
            padding: 16px; text-align: center; }
.kpi-num  { font-size: 30px; font-weight: 700; line-height: 1.1; color: var(--text); }
.kpi-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase;
             letter-spacing: .05em; margin-top: 4px; }

/* ── Progress bar ─────────────────────────────────────────────────────────────── */
.progress-bar  { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg,#22c55e,#86efac);
                 border-radius: 2px; transition: width .3s; }

/* ── Toolbar strip ────────────────────────────────────────────────────────────── */
.toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
           padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); }

/* ── Section headers ──────────────────────────────────────────────────────────── */
.section-title { font-size: 11px; font-weight: 700; text-transform: uppercase;
                 color: var(--text-faint); letter-spacing: .6px; margin-bottom: 6px; }

/* ── Tab strip ────────────────────────────────────────────────────────────────── */
.tab-strip {
  display: flex; gap: 2px; border-bottom: 2px solid var(--border);
  padding: 0 0 0 0; margin-bottom: 20px;
}
.tab-btn {
  padding: 8px 18px; font-size: 13px; font-weight: 600; border: none;
  background: none; cursor: pointer; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  border-radius: 6px 6px 0 0; transition: all .15s;
}
.tab-btn:hover { color: var(--text); background: var(--surface-2); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); background: none; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Repository link, beside the theme toggle. Inherits the nav's own colours so it
   reads as chrome rather than as page content. */
.repo-link {
  display: inline-flex; align-items: center; gap: 6px; margin-left: auto;
  color: var(--nav-text); text-decoration: none; font-size: 12px; font-weight: 500;
  padding: 5px 9px; border-radius: 6px; line-height: 1;
}
/* .theme-toggle also carries margin-left:auto; two auto margins would SPLIT the
   free space and separate the pair. The repo link (first in the DOM) takes it, and
   the toggle's is neutralised so the two sit together at the right. */
.repo-link + .theme-toggle { margin-left: 0; }
.repo-link:hover { color: #fff; background: var(--nav-hover); }
.repo-link:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.repo-link svg { display: block; }