:root {
  --bg: #070a14;
  --bg-elev: #0e1424;
  --bg-card: #111a2e;
  --line: #1e293b;
  --line-strong: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-mute: #64748b;
  --accent: #60a5fa;
  --accent-strong: #3b82f6;
  --grade-a: #22c55e;
  --grade-b: #84cc16;
  --grade-c: #f59e0b;
  --grade-d: #fb923c;
  --grade-f: #ef4444;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: #93c5fd; text-decoration: underline; }
code { font-family: var(--mono); background: #0b1220; padding: 1px 6px; border-radius: 4px; font-size: 0.9em; color: #c7d2fe; }
.hidden { display: none !important; }
.muted { color: var(--text-dim); font-size: 14px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.topbar {
  background: linear-gradient(180deg, #0a1020, #070a14);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}
.brand {
  display: flex; align-items: center; gap: 12px; color: var(--text);
  font-family: var(--mono); font-weight: 600; font-size: 17px;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid; place-items: center;
  width: 30px; height: 30px; border-radius: 6px;
  background: var(--grade-a); color: #0b1220; font-weight: 800;
  box-shadow: 0 0 0 1px rgba(34,197,94,0.4), 0 4px 12px rgba(34,197,94,0.2);
}
.tabs { display: flex; gap: 4px; }
.tabs a {
  color: var(--text-dim); padding: 8px 14px; border-radius: 8px;
  font-weight: 500; font-size: 14px;
}
.tabs a:hover { color: var(--text); background: var(--bg-elev); text-decoration: none; }
.tabs a.active { color: var(--text); background: var(--bg-card); box-shadow: inset 0 0 0 1px var(--line-strong); }

.tagline { font-size: 16px; color: var(--text-dim); margin: 28px 0 24px; max-width: 720px; }

.view { margin-bottom: 60px; }

.bigform {
  display: flex; gap: 8px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  padding: 6px; box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.bigform input {
  flex: 1; background: transparent; border: 0; outline: 0;
  color: var(--text); font: 16px var(--mono);
  padding: 12px 14px;
}
.bigform input::placeholder { color: var(--text-mute); }
.bigform button {
  background: var(--accent-strong); color: white; border: 0;
  padding: 12px 22px; border-radius: 8px;
  font-weight: 600; font-size: 14px; cursor: pointer;
  transition: background 120ms;
}
.bigform button:hover { background: #2563eb; }
.bigform button:disabled { background: #1e293b; color: var(--text-mute); cursor: wait; }

.chips {
  margin: 14px 2px;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
}
.chips-label { color: var(--text-mute); font-size: 13px; margin-right: 4px; }
.chips button {
  background: var(--bg-elev); border: 1px solid var(--line); color: var(--text-dim);
  padding: 6px 10px; border-radius: 16px; font: 12px var(--mono); cursor: pointer;
}
.chips button:hover { color: var(--text); border-color: var(--line-strong); }

.progress {
  margin-top: 24px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px;
  display: flex; align-items: center; gap: 18px;
}
.progress-label { color: var(--text-dim); font-size: 14px; }
.dots { display: flex; gap: 8px; }
.dots div {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--line);
  animation: pulse 1.2s ease-in-out infinite;
}
.dots div:nth-child(2) { animation-delay: 0.1s }
.dots div:nth-child(3) { animation-delay: 0.2s }
.dots div:nth-child(4) { animation-delay: 0.3s }
.dots div:nth-child(5) { animation-delay: 0.4s }
.dots div:nth-child(6) { animation-delay: 0.5s }
.dots div:nth-child(7) { animation-delay: 0.6s }
.dots div:nth-child(8) { animation-delay: 0.7s }
.dots div:nth-child(9) { animation-delay: 0.8s }
@keyframes pulse {
  0%, 100% { background: var(--line); transform: scale(1); }
  50% { background: var(--accent); transform: scale(1.2); }
}
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.result {
  margin-top: 24px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  padding: 28px;
}
.result-head {
  display: grid; grid-template-columns: auto 1fr auto; gap: 28px;
  align-items: center;
}
.grade-big {
  font: 700 96px/0.9 var(--mono);
  width: 132px; height: 132px;
  display: grid; place-items: center;
  border-radius: 16px;
}
.grade-big.A { background: rgba(34,197,94,0.12); color: var(--grade-a); border: 1px solid rgba(34,197,94,0.4); }
.grade-big.B { background: rgba(132,204,22,0.12); color: var(--grade-b); border: 1px solid rgba(132,204,22,0.4); }
.grade-big.C { background: rgba(245,158,11,0.12); color: var(--grade-c); border: 1px solid rgba(245,158,11,0.4); }
.grade-big.D { background: rgba(251,146,60,0.12); color: var(--grade-d); border: 1px solid rgba(251,146,60,0.4); }
.grade-big.F { background: rgba(239,68,68,0.12); color: var(--grade-f); border: 1px solid rgba(239,68,68,0.4); }

.result-meta .domain { font: 600 28px var(--sans); }
.result-meta .score { font: 500 16px var(--mono); color: var(--text-dim); margin-top: 4px; }
.result-meta .timestamp { color: var(--text-mute); font-size: 12px; margin-top: 6px; }

.result-actions { display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }
.result-actions button {
  background: var(--bg-elev); border: 1px solid var(--line); color: var(--text);
  padding: 8px 14px; border-radius: 8px; font-size: 13px; cursor: pointer;
  white-space: nowrap;
}
.result-actions button:hover { background: #1a253d; border-color: var(--line-strong); }

.checklist {
  margin-top: 28px;
  display: grid; gap: 4px;
}
.check {
  display: grid; grid-template-columns: 28px 1fr auto; gap: 12px;
  padding: 12px 14px; border-radius: 8px; align-items: start;
}
.check:hover { background: rgba(255,255,255,0.02); }
.check-icon {
  font-family: var(--mono); font-size: 18px; font-weight: 700;
  width: 24px; height: 24px; display: grid; place-items: center; border-radius: 6px;
}
.check.pass .check-icon { color: var(--grade-a); background: rgba(34,197,94,0.12); }
.check.fail .check-icon { color: var(--grade-f); background: rgba(239,68,68,0.12); }
.check.skip .check-icon { color: var(--text-mute); background: rgba(100,116,139,0.12); }
.check-label { font-weight: 500; color: var(--text); }
.check-detail { color: var(--text-dim); font-size: 13px; margin-top: 4px; font-family: var(--mono); }
.check-weight { color: var(--text-mute); font-family: var(--mono); font-size: 12px; }

.collapsible {
  margin-top: 24px; border: 1px solid var(--line); border-radius: 8px;
  overflow: hidden;
}
.collapsible summary {
  cursor: pointer; padding: 12px 16px; background: var(--bg-elev);
  font-size: 14px; color: var(--text-dim); list-style: none;
}
.collapsible summary::-webkit-details-marker { display: none; }
.collapsible summary::before { content: "▸  "; font-family: var(--mono); }
.collapsible[open] summary::before { content: "▾  "; }
.collapsible pre {
  margin: 0; padding: 16px; background: #050810;
  color: #cbd5e1; font: 12px/1.5 var(--mono);
  overflow-x: auto; white-space: pre-wrap; word-break: break-all;
  max-height: 480px; overflow-y: auto;
}

.og-preview {
  margin-top: 24px; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; background: #050810;
}
.og-preview img { display: block; width: 100%; height: auto; }
.og-caption { padding: 10px 14px; color: var(--text-mute); font-size: 12px; font-family: var(--mono); border-top: 1px solid var(--line); }

.cta-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line);
}
.cta-row .cta {
  background: linear-gradient(180deg, #1d4ed8, #1e40af);
  color: white; padding: 10px 18px; border-radius: 8px; border: 0;
  font-weight: 600; font-size: 14px; cursor: pointer;
}
.cta-row .cta:hover { background: linear-gradient(180deg, #2563eb, #1d4ed8); }

.generate-result {
  display: grid; grid-template-columns: 280px 1fr; gap: 20px; margin-top: 24px;
}
.gen-stats {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  padding: 20px; display: flex; flex-direction: column; gap: 14px;
  align-self: start;
}
.gen-stat { display: flex; flex-direction: column; }
.gen-stat .v { font: 600 22px var(--mono); color: var(--text); }
.gen-stat .k { color: var(--text-mute); font-size: 12px; margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.gen-stat .badge {
  display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 11px;
  background: rgba(34,197,94,0.15); color: var(--grade-a); border: 1px solid rgba(34,197,94,0.3);
  text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600;
  margin-top: 4px; width: max-content;
}
.gen-stat .badge.off { background: rgba(100,116,139,0.15); color: var(--text-dim); border-color: var(--line-strong); }
.gen-md-wrap {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden;
}
.gen-md-toolbar {
  display: flex; gap: 8px; padding: 10px 14px; background: var(--bg-elev);
  border-bottom: 1px solid var(--line); justify-content: flex-end;
}
.gen-md-toolbar button {
  background: #1a253d; border: 1px solid var(--line); color: var(--text);
  padding: 6px 12px; border-radius: 6px; font-size: 12px; cursor: pointer;
}
.gen-md-toolbar button:hover { background: #1e293b; border-color: var(--line-strong); }
.gen-md {
  margin: 0; padding: 18px 20px; background: #050810;
  color: #cbd5e1; font: 13px/1.55 var(--mono);
  white-space: pre-wrap; word-break: break-all;
  max-height: 540px; overflow-y: auto;
}
@media (max-width: 760px) {
  .generate-result { grid-template-columns: 1fr; }
}

.lb-toolbar {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-bottom: 18px;
}
.lb-filters { display: flex; gap: 4px; }
.lb-filters button {
  background: var(--bg-elev); border: 1px solid var(--line); color: var(--text-dim);
  padding: 6px 12px; border-radius: 6px; font-family: var(--mono); font-size: 13px; cursor: pointer;
}
.lb-filters button:hover { color: var(--text); }
.lb-filters button.active { background: var(--bg-card); color: var(--text); border-color: var(--line-strong); }
.lb-sort { display: flex; align-items: center; gap: 8px; color: var(--text-dim); font-size: 13px; }
.lb-sort select {
  background: var(--bg-elev); border: 1px solid var(--line); color: var(--text);
  padding: 6px 10px; border-radius: 6px; font: 13px var(--mono);
}
.lb-status { margin-left: auto; color: var(--text-mute); font: 12px var(--mono); }

.lb-table {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden;
}
.lb-table table { width: 100%; border-collapse: collapse; }
.lb-table th {
  text-align: left; padding: 12px 16px;
  font: 11px var(--mono); text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text-mute); border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
}
.lb-table td {
  padding: 11px 16px; border-bottom: 1px solid var(--line);
  font: 14px var(--sans); vertical-align: middle;
}
.lb-table tr:last-child td { border-bottom: 0; }
.lb-table tr:hover td { background: rgba(255,255,255,0.02); }
.lb-rank { font: 13px var(--mono); color: var(--text-mute); width: 60px; }
.lb-domain { font-weight: 500; color: var(--text); }
.lb-score { font: 14px var(--mono); color: var(--text-dim); width: 70px; }
.lb-action { width: 110px; text-align: right; }
.lb-action a { font-size: 13px; }

.grade-badge {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 6px;
  font: 700 13px var(--mono);
}
.grade-badge.A { background: rgba(34,197,94,0.15); color: var(--grade-a); border: 1px solid rgba(34,197,94,0.35); }
.grade-badge.B { background: rgba(132,204,22,0.15); color: var(--grade-b); border: 1px solid rgba(132,204,22,0.35); }
.grade-badge.C { background: rgba(245,158,11,0.15); color: var(--grade-c); border: 1px solid rgba(245,158,11,0.35); }
.grade-badge.D { background: rgba(251,146,60,0.15); color: var(--grade-d); border: 1px solid rgba(251,146,60,0.35); }
.grade-badge.F { background: rgba(239,68,68,0.15); color: var(--grade-f); border: 1px solid rgba(239,68,68,0.35); }
.grade-badge.pending { background: rgba(100,116,139,0.15); color: var(--text-mute); border: 1px solid var(--line); font-size: 11px; }

.empty {
  padding: 60px 24px; text-align: center; color: var(--text-dim);
  background: var(--bg-card); border: 1px dashed var(--line); border-radius: 12px;
}
.error-box {
  margin-top: 24px;
  background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.3);
  border-radius: 12px; padding: 18px 20px; color: #fca5a5;
}

.footer {
  margin: 72px 0 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between;
  color: var(--text-mute); font-size: 12px;
  flex-wrap: wrap; gap: 12px;
}

.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%);
  background: var(--bg-elev); border: 1px solid var(--line-strong);
  padding: 10px 18px; border-radius: 8px; color: var(--text);
  font-size: 13px; box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 100; animation: toast 1.8s ease forwards;
}
@keyframes toast {
  0% { opacity: 0; transform: translate(-50%, 10px); }
  10%, 80% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -10px); }
}