:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --text: #20242a;
  --muted: #5c6675;
  --label: #445063;
  --border: #d9dee7;
  --border-soft: #e7eaf0;
  --input-border: #b9c2d0;
  --link: #135f9f;
  --primary: #126a43;
  --danger: #8a2d2d;
  --secondary: #445063;
  --pre-bg: #111820;
  --pre-text: #eaf0f7;
  --status-bg: #edf0f5;
  --status-text: #445063;
  --risk-low-bg: #dff2e7;
  --risk-low-text: #126a43;
  --risk-medium-bg: #fff0c2;
  --risk-medium-text: #755300;
  --risk-high-bg: #f8d7da;
  --risk-high-text: #8a2d2d;
  background: var(--bg);
  color: var(--text);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11151b;
  --surface: #1a2029;
  --surface-muted: #151b23;
  --text: #e8edf4;
  --muted: #a9b4c2;
  --label: #c4cedb;
  --border: #303947;
  --border-soft: #29323f;
  --input-border: #4c5868;
  --link: #78b7ff;
  --primary: #23835a;
  --danger: #b84f58;
  --secondary: #667386;
  --pre-bg: #0c1117;
  --pre-text: #edf4ff;
  --status-bg: #263241;
  --status-text: #d7e0eb;
  --risk-low-bg: #173f2b;
  --risk-low-text: #9be2b7;
  --risk-medium-bg: #4b3911;
  --risk-medium-text: #ffd875;
  --risk-high-bg: #4a1f25;
  --risk-high-text: #ffb0b8;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
h1, h2, h3, p { margin-top: 0; }
header h1 { font-size: 22px; margin-bottom: 4px; }
header p { margin-bottom: 0; color: var(--muted); }
nav { display: flex; align-items: center; gap: 16px; }
a { color: var(--link); text-decoration: none; }
main { max-width: 1180px; margin: 0 auto; padding: 28px; }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 22px;
}
.submit-form, .decision-form, .sandbox-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: end;
}
.decision-form { grid-template-columns: 1fr auto auto; }
.sandbox-form { grid-template-columns: auto; justify-content: start; margin-top: 12px; }
label { display: grid; gap: 7px; color: var(--label); font-weight: 600; }
input {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 15px;
  background: var(--surface);
  color: var(--text);
}
button {
  border: 0;
  border-radius: 6px;
  padding: 11px 16px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
  min-height: 41px;
}
button.secondary { background: var(--danger); }
button.theme-toggle {
  min-height: 34px;
  padding: 7px 11px;
  background: var(--status-bg);
  color: var(--status-text);
  border: 1px solid var(--border);
}
.button-link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  margin: 12px 10px 0 0;
  border-radius: 6px;
  padding: 9px 13px;
  background: var(--link);
  color: #ffffff;
  font-weight: 700;
}
.secondary-link { background: var(--secondary); }
.sandbox-shot {
  display: block;
  width: 100%;
  max-width: 100%;
  min-height: 240px;
  object-fit: contain;
  background: var(--surface);
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.sandbox-preview {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-muted);
}
.sandbox-help {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}
.external-error {
  white-space: pre-wrap;
  color: var(--danger);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
}
th, td {
  text-align: left;
  border-bottom: 1px solid var(--border-soft);
  padding: 11px 12px;
  vertical-align: top;
}
th { color: var(--label); font-size: 13px; }
.url { word-break: break-all; }
.risk, .status {
  display: inline-flex;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .02em;
}
.risk.low { background: var(--risk-low-bg); color: var(--risk-low-text); }
.risk.medium { background: var(--risk-medium-bg); color: var(--risk-medium-text); }
.risk.high { background: var(--risk-high-bg); color: var(--risk-high-text); }
.status { background: var(--status-bg); color: var(--status-text); }
.summary {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 22px;
}
.score {
  min-width: 170px;
  display: grid;
  justify-items: end;
  gap: 6px;
}
.score strong { font-size: 26px; }
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.vt-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
}
.vt-grid p { margin-bottom: 6px; }
pre {
  overflow: auto;
  background: var(--pre-bg);
  color: var(--pre-text);
  padding: 16px;
  border-radius: 6px;
}
.notice.danger {
  grid-column: 1 / -1;
  padding: 10px 12px;
  background: var(--risk-high-bg);
  color: var(--risk-high-text);
  border-radius: 6px;
}
.empty { color: var(--muted); text-align: center; }
@media (max-width: 760px) {
  header, .summary { align-items: flex-start; flex-direction: column; }
  nav { flex-wrap: wrap; }
  main { padding: 18px; }
  .submit-form, .decision-form, .sandbox-form, .grid, .vt-grid { grid-template-columns: 1fr; }
  .score { justify-items: start; }
}