* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --navy: #0f1e3a;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --bg: #ffffff;
  --soft: #f4f6fb;
  --border: #e3e8f0;
  --muted: #64748b;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
}
body { font-family: 'Segoe UI', system-ui, -apple-system, Arial, sans-serif; color: var(--navy); background: var(--bg); line-height: 1.55; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 760px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }

/* Header */
.site-header { position: sticky; top: 0; background: #fff; border-bottom: 1px solid var(--border); z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--navy); text-decoration: none; }
.brand-icon { color: var(--blue); }
.main-nav { display: flex; gap: 20px; margin-left: 12px; }
.main-nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem; }
.main-nav a.active, .main-nav a:hover { color: var(--blue); }
.header-inner .btn { margin-left: auto; }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.3rem; cursor: pointer; }

/* Buttons */
.btn { display: inline-block; border: 0; border-radius: 10px; padding: 12px 22px; font-weight: 600; cursor: pointer; text-decoration: none; font-size: .95rem; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-primary:disabled { background: #93b4f5; cursor: not-allowed; }
.btn-outline { background: #fff; border: 1px solid var(--border); color: var(--navy); }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-sm { padding: 8px 14px; font-size: .85rem; }

/* Hero */
.hero { padding: 72px 0 56px; background: linear-gradient(180deg, #f8faff 0%, #fff 100%); text-align: center; }
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); }
.hero .sub { color: var(--muted); max-width: 640px; margin: 14px auto 30px; }
.url-form { display: flex; gap: 10px; max-width: 720px; margin: 0 auto; }
.url-form input { flex: 1; padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px; font-size: 1rem; }
.url-form input:focus { outline: 2px solid var(--blue); border-color: transparent; }
.trust { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: center; margin-top: 22px; color: var(--muted); font-size: .92rem; }

/* Cards / sections */
.section { padding: 48px 0; }
.section.alt { background: var(--soft); }
.card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 20px; box-shadow: 0 1px 3px rgba(15,30,58,.05); }
.section-title { font-size: 1.25rem; margin: 26px 0 14px; }
.section-title.center, .center { text-align: center; }

/* Loading */
.steps { list-style: none; margin-top: 16px; }
.steps li { padding: 6px 0; color: var(--muted); }
.steps li.done::before { content: '✓ '; color: var(--green); font-weight: 700; }
.steps li.current::before { content: '● '; color: var(--blue); animation: pulse 1s infinite; }
.steps li.pending::before { content: '○ '; color: #cbd5e1; }
@keyframes pulse { 50% { opacity: .35; } }

.error-card { border-left: 4px solid var(--red); }
.error-card h2 { color: var(--red); }

/* Score */
.results-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; align-items: start; }
.score-card { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.score-circle { position: relative; width: 150px; height: 150px; }
.score-circle svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-circle .track { fill: none; stroke: #e8edf5; stroke-width: 10; }
.score-circle .bar { fill: none; stroke: var(--blue); stroke-width: 10; stroke-linecap: round; stroke-dasharray: 339.292; stroke-dashoffset: 339.292; transition: stroke-dashoffset 1s ease, stroke .4s; }
.score-text { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 700; }
.score-of { font-size: .9rem; color: var(--muted); margin-top: 14px; margin-left: 2px; }
.badge-label { font-size: .72rem; letter-spacing: .14em; color: var(--muted); font-weight: 700; }
.status-pill { display: inline-block; margin: 8px 0 14px; padding: 4px 14px; border-radius: 999px; background: #eff6ff; color: var(--blue); font-weight: 600; }
.summary-counts { display: flex; gap: 26px; }
.summary-counts b { font-size: 1.4rem; display: block; }
.summary-counts small { color: var(--muted); }
.c-err b { color: var(--red); } .c-warn b { color: var(--amber); } .c-pass b { color: var(--green); }

/* Category cards */
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.cat-card h4 { font-size: .98rem; margin-bottom: 6px; }
.cat-score { font-size: 1.5rem; font-weight: 700; }
.cat-counts { color: var(--muted); font-size: .85rem; margin-top: 6px; }
.cat-bar { height: 6px; border-radius: 999px; background: #e8edf5; margin-top: 10px; overflow: hidden; }
.cat-bar i { display: block; height: 100%; border-radius: 999px; }

/* Filters */
.filters { display: flex; gap: 8px; align-items: center; margin: 30px 0 10px; flex-wrap: wrap; }
.filter { border: 1px solid var(--border); background: #fff; border-radius: 999px; padding: 6px 16px; cursor: pointer; font-size: .85rem; }
.filter.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.search-input { margin-left: auto; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; min-width: 200px; }

/* Checks */
.check-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
.check-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; cursor: pointer; background: #fff; }
.check-head:hover { background: var(--soft); }
.check-head .name { font-weight: 600; flex: 1; }
.check-head .cat { color: var(--muted); font-size: .8rem; }
.badge { font-size: .7rem; font-weight: 700; letter-spacing: .06em; padding: 3px 10px; border-radius: 999px; }
.badge.error { background: #fee2e2; color: var(--red); }
.badge.warning { background: #fef3c7; color: var(--amber); }
.badge.pass { background: #dcfce7; color: var(--green); }
.check-body { padding: 0 16px 16px; color: #334155; font-size: .92rem; }
.check-body h5 { margin: 10px 0 4px; font-size: .85rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.check-body code { background: var(--soft); padding: 2px 6px; border-radius: 6px; word-break: break-all; }

/* Sidebar */
.col-side .card { margin-bottom: 16px; }
.col-side h4 { margin-bottom: 10px; }
.info-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.info-table td, .info-table th { padding: 5px 0; border-bottom: 1px solid #f1f5f9; text-align: left; vertical-align: top; }
.info-table td:first-child { color: var(--muted); width: 45%; }
.info-table th { color: var(--muted); font-weight: 600; font-size: .8rem; }
#headingsList .h { margin-bottom: 6px; font-size: .85rem; }
.h-label { font-weight: 700; color: var(--muted); margin-right: 6px; }
.tag { display:inline-block; padding:2px 8px; border-radius:6px; font-size:.75rem; font-weight:600; margin:0 4px 4px 0; }
.tag.ok { background:#dcfce7; color:var(--green); }
.tag.miss { background:#fee2e2; color:var(--red); }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.feature p { color: var(--muted); font-size: .9rem; margin-top: 6px; }
.how-list { list-style: decimal inside; padding-left: 8px; }
.how-list li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.faq { border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin-top: 8px; }

.site-footer { background: var(--navy); color: #cbd5e1; padding: 28px 0; text-align: center; font-size: .88rem; }

@media (max-width: 900px) {
  .results-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 14px 20px; }
  .nav-toggle { display: block; }
  .header-inner .btn.btn-primary { display: none; }
  .url-form { flex-direction: column; }
  .search-input { margin-left: 0; flex: 1; }
}

@media print {
  .no-print, .nav-toggle, .site-header .btn, .filters, .hero .url-form, .hero .trust { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; break-inside: avoid; }
  .check-body { display: block !important; }
  .site-header { position: static; }
}