:root {
  --bg-primary: #090a0f;
  --bg-surface: #11131c;
  --bg-elevated: #171a26;
  --bg-code: #0b0d14;
  --border-subtle: #232738;
  --border-accent: #3b4262;
  --text-primary: #f3f4f8;
  --text-secondary: #9ca3b8;
  --text-muted: #687089;
  --accent-primary: #6366f1;
  --accent-hover: #818cf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --radius-std: 10px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.app-shell { max-width: 1260px; margin: 0 auto; padding: 24px 20px 64px; }

.top-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-std);
  margin-bottom: 22px;
}

.brand-group { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: var(--radius-std);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-emerald));
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; color: #fff; text-decoration: none;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.hero-banner {
  padding: 24px; background: linear-gradient(180deg, #131624 0%, #0d0f18 100%);
  border: 1px solid var(--border-accent); border-radius: var(--radius-std); margin-bottom: 22px;
}
.hero-banner h1 { font-size: 1.7rem; letter-spacing: -0.02em; margin-bottom: 8px; }
.hero-banner p { color: var(--text-secondary); font-size: 0.96rem; }
.benchmark-strip {
  background: rgba(99, 102, 241, 0.1); border: 1px solid var(--border-accent);
  border-radius: var(--radius-std); padding: 14px 18px; margin-bottom: 22px;
}
.benchmark-headline {
  font-size: 0.95rem; font-weight: 700; color: #c7d2fe; margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.benchmark-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.stat-card { background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius-std); padding: 12px 14px; }
.stat-val { font-size: 1.45rem; font-weight: 800; color: var(--text-primary); }
.stat-lbl { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }

.workspace-grid, .diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
@media (max-width: 960px) {
  .workspace-grid, .diff-grid { grid-template-columns: 1fr; }
}

.saas-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-std);
  padding: 20px;
  margin-bottom: 20px;
}
.workspace-grid .saas-card, .diff-grid .saas-card { margin-bottom: 0; }

.section-title {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-std);
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--border-subtle);
}
.badge-critical { background: rgba(244, 63, 94, 0.15); color: #fda4af; border-color: rgba(244, 63, 94, 0.45); }
.badge-high { background: rgba(245, 158, 11, 0.15); color: #fcd34d; border-color: rgba(245, 158, 11, 0.45); }
.badge-optimal { background: rgba(16, 185, 129, 0.15); color: #6ee7b7; border-color: rgba(16, 185, 129, 0.45); }
.badge-neutral { background: var(--bg-elevated); color: var(--text-secondary); border-color: var(--border-subtle); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 15px;
  border-radius: var(--radius-std);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.86rem;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}
.btn:hover { opacity: 0.92; }
.btn-primary { background: var(--accent-primary); color: #fff; }
.btn-emerald { background: var(--accent-emerald); color: #042f1e; font-weight: 700; }
.btn-outline { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border-accent); }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }

input[type="search"], input[type="text"], select, textarea {
  width: 100%;
  background: var(--bg-code);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-std);
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
}
textarea { font-family: var(--font-mono); font-size: 0.79rem; min-height: 170px; resize: vertical; margin-bottom: 12px; }

.filter-bar {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.1fr 0.8fr;
  gap: 12px;
  margin-bottom: 16px;
}
@media (max-width: 860px) { .filter-bar { grid-template-columns: 1fr; } }

.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
}
.brand-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-std);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}
.brand-card:hover { border-color: var(--accent-primary); }
.brand-thumb {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-std);
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  background: var(--bg-code);
  flex-shrink: 0;
}
.product-hero-img {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-std);
  object-fit: cover;
  border: 1px solid var(--border-accent);
  background: var(--bg-code);
}

.progress-track {
  width: 100%;
  height: 10px;
  background: var(--bg-code);
  border-radius: var(--radius-std);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin: 10px 0 14px;
}
.progress-fill { height: 100%; }
.fill-critical { background: var(--accent-rose); }
.fill-high { background: var(--accent-amber); }
.fill-optimal { background: var(--accent-emerald); }

.code-box {
  background: var(--bg-code);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-std);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.77rem;
  color: #a5f3fc;
  overflow-x: auto;
  max-height: 340px;
  white-space: pre-wrap;
  word-break: break-word;
}
.code-box.broken { color: #fda4af; border-color: rgba(244, 63, 94, 0.4); }

.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
@media (max-width: 640px) { .cta-grid { grid-template-columns: 1fr; } }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.83rem; }
.data-table th, .data-table td { padding: 8px 10px; border-bottom: 1px solid var(--border-subtle); text-align: left; }
.seo-crawl-index { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.seo-crawl-index a { font-size: 0.75rem; color: var(--text-secondary); background: var(--bg-elevated); padding: 3px 8px; border-radius: var(--radius-std); border: 1px solid var(--border-subtle); text-decoration: none; }
.seo-crawl-index a:hover { color: #fff; border-color: var(--accent-primary); }