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

:root {
  --bg:         #0d1117;
  --bg-surface: #161b22;
  --bg-raised:  #21262d;
  --border:     #30363d;
  --text:       #e6edf3;
  --muted:      #8b949e;
  --accent:     #388bfd;
  --accent-dim: #1f6feb;
  --green:      #3fb950;
  --green-dim:  #238636;
  --red:        #f85149;
  --red-dim:    #8b0000;
  --yellow:     #d29922;
  --purple:     #bc8cff;
  --radius:     8px;
  --radius-lg:  12px;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ─── Layout helpers ───────────────────────────────────────── */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 64px 0;
}

.section--dark {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* ─── Header ───────────────────────────────────────────────── */
.site-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 48px 0 40px;
  text-align: center;
}

.header-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(56, 139, 253, 0.1);
  border: 1px solid rgba(56, 139, 253, 0.3);
  border-radius: 20px;
  padding: 3px 12px;
  margin-bottom: 16px;
}

.site-title {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 8px;
}

.site-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 20px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 16px;
  border-radius: 20px;
}

.status-pill.pass {
  background: rgba(63, 185, 80, 0.15);
  border: 1px solid var(--green-dim);
  color: var(--green);
}

/* ─── Score cards ──────────────────────────────────────────── */
.cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cards-row--2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 600px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

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

.card--before { border-top: 3px solid var(--red); }
.card--after  { border-top: 3px solid var(--green); }
.card--delta  { border-top: 3px solid var(--purple); }

.card-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.card-score {
  font-size: 3.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.03em;
  transition: color var(--transition);
}

.card-score.positive { color: var(--green); }
.card--before .card-score { color: var(--red); }
.card--after  .card-score { color: var(--green); }

.card-denom {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 4px;
  margin-bottom: 14px;
}

.card-detail {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 4px;
}

.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}

.card-tag.critical    { background: rgba(248,81,73,.15); border:1px solid var(--red);    color: var(--red); }
.card-tag.excellent   { background: rgba(63,185,80,.15); border:1px solid var(--green);  color: var(--green); }
.card-tag.improvement { background: rgba(188,140,255,.15); border:1px solid var(--purple); color: var(--purple); }

/* ─── Breakdown bars ───────────────────────────────────────── */
.breakdown-grid {
  display: grid;
  gap: 18px;
}

.breakdown-row {
  display: grid;
  grid-template-columns: 220px 1fr 80px;
  align-items: center;
  gap: 16px;
}

.breakdown-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
}

.breakdown-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.bar-track {
  height: 10px;
  background: var(--bg-raised);
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: 5px;
  width: 0%;
  transition: width 1s cubic-bezier(.4,0,.2,1);
}

.bar-fill--before { background: var(--red-dim); }
.bar-fill--after  { background: var(--green); }

.breakdown-delta {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--green);
  text-align: right;
  white-space: nowrap;
}

/* ─── Test grid ────────────────────────────────────────────── */
.test-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.test-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 13px;
  font-size: 0.78rem;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  transition: border-color var(--transition);
}

.test-chip:hover { border-color: var(--green-dim); color: var(--text); }

.test-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.test-dot--pass { background: var(--green); }
.test-dot--baseline { background: var(--yellow); }

/* ─── Defect grid ──────────────────────────────────────────── */
.defect-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.defect-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: border-color var(--transition);
}

.defect-card:hover { border-left-color: var(--accent); }

.defect-id {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.defect-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
}

.defect-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.defect-badge {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(63,185,80,.12);
  border: 1px solid var(--green-dim);
  color: var(--green);
}

/* ─── Workflow track ───────────────────────────────────────── */
.workflow-track {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  row-gap: 16px;
}

.workflow-step {
  display: flex;
  align-items: center;
}

.step-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  min-width: 120px;
  text-align: center;
  transition: border-color var(--transition), background var(--transition);
}

.step-box:hover {
  border-color: var(--accent-dim);
  background: var(--bg-raised);
}

.step-num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.step-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

.step-arrow {
  font-size: 1rem;
  color: var(--muted);
  padding: 0 6px;
  flex-shrink: 0;
}

/* ─── Business value ───────────────────────────────────────── */
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.value-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  transition: border-color var(--transition);
}

.value-card:hover { border-color: var(--accent-dim); }

.value-icon {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.value-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.value-desc {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ─── Verification table ───────────────────────────────────── */
.verify-block {
  overflow-x: auto;
}

.verify-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.verify-table thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.verify-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.verify-table tbody tr:last-child { border-bottom: none; }
.verify-table tbody tr:hover { background: var(--bg-surface); }

.verify-table td {
  padding: 11px 14px;
  color: var(--text);
  vertical-align: middle;
}

.verify-table td:first-child { color: var(--muted); font-size: 0.82rem; }

.badge-pass {
  display: inline-block;
  background: rgba(63,185,80,.15);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 9px;
  border-radius: 10px;
}

.badge-fixed {
  display: inline-block;
  background: rgba(56,139,253,.12);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 9px;
  border-radius: 10px;
}

/* ─── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ─── Responsive ───────────────────────────────────────────── */
@media (max-width: 700px) {
  .site-title { font-size: 1.8rem; }
  .cards-row  { grid-template-columns: 1fr; }
  .cards-row--2 { grid-template-columns: 1fr; }
  .breakdown-row { grid-template-columns: 1fr; gap: 6px; }
  .breakdown-delta { text-align: left; }
  .workflow-track { flex-direction: column; align-items: flex-start; }
  .step-arrow { transform: rotate(90deg); }
}