:root {
  color-scheme: light;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #f0f3f7;
  --border: #e1e6ee;
  --text: #0f172a;
  --muted: #5a6577;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --pass: #15803d;
  --pass-bg: #e7f6ec;
  --warn: #b45309;
  --warn-bg: #fdf3e2;
  --fail: #c81e1e;
  --fail-bg: #fde8e8;
  --info: #64748b;
  --info-bg: #eef1f5;
  --shadow: 0 1px 2px rgb(15 23 42 / 6%), 0 4px 16px rgb(15 23 42 / 5%);
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0a0e16;
    --surface: #111827;
    --surface-2: #172033;
    --border: #253047;
    --text: #e6ebf3;
    --muted: #94a1b8;
    --accent: #5b9dff;
    --accent-text: #06101f;
    --pass: #4ade80;
    --pass-bg: #0f2a1b;
    --warn: #fbbf24;
    --warn-bg: #2d2210;
    --fail: #f87171;
    --fail-bg: #331417;
    --info: #94a3b8;
    --info-bg: #1b2333;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 20px rgb(0 0 0 / 25%);
  }
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  max-width: 1120px; margin: 0 auto; padding: 18px 16px;
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; font-size: 18px; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.logo { width: 28px; height: 28px; color: var(--accent); }
.tagline { color: var(--muted); font-size: 14px; }

main { max-width: 1120px; margin: 0 auto; padding: 0 16px 48px; }

/* ---------- hero / form ---------- */
.hero { text-align: center; padding: 36px 0 28px; }
.hero h1 { font-size: clamp(26px, 4.5vw, 38px); line-height: 1.15; margin: 0 0 10px; letter-spacing: -.02em; }
.lede { color: var(--muted); margin: 0 auto 24px; max-width: 620px; }

.scan-form {
  display: flex; gap: 8px; max-width: 700px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
  padding: 6px; box-shadow: var(--shadow);
}
.scan-form:focus-within { border-color: var(--accent); }
.scan-form input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text);
  font: inherit; font-size: 16px; padding: 10px 16px;
}
.scan-form button, .btn {
  border: 0; border-radius: 999px; background: var(--accent); color: var(--accent-text);
  font: inherit; font-weight: 600; padding: 10px 26px; cursor: pointer;
}
.scan-form button:disabled { opacity: .6; cursor: progress; }
.btn:disabled { opacity: .55; cursor: default; }
.btn.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); padding: 8px 16px; font-size: 14px; }

.password-row { display: flex; gap: 10px; align-items: center; justify-content: center; margin-top: 12px; color: var(--muted); font-size: 14px; }
.password-row input { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; font: inherit; }

.form-error { margin: 14px auto 0; max-width: 700px; color: var(--fail); background: var(--fail-bg); border-radius: 10px; padding: 10px 14px; }

.sources { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 16px; }
.history { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted);
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px;
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--info); }
.chip.on .dot { background: var(--pass); }
button.chip { cursor: pointer; font: inherit; font-size: 12.5px; }
button.chip:hover { color: var(--text); border-color: var(--accent); }

/* ---------- summary ---------- */
.summary {
  display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 14px; margin-bottom: 14px;
}
.tile {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); display: flex; gap: 16px; align-items: center; min-width: 0;
}
.tile h3 { margin: 0 0 2px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.tile .big { font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
.tile .sub { color: var(--muted); font-size: 13.5px; }
.tile-body { min-width: 0; }

.grade {
  flex: none; width: 76px; height: 76px; border-radius: 50%; display: grid; place-items: center;
  font-size: 30px; font-weight: 800; letter-spacing: -.03em;
  border: 5px solid currentColor; color: var(--info);
}
.grade.g-A { color: var(--pass); }
.grade.g-B { color: #65a30d; }
.grade.g-C, .grade.g-D { color: var(--warn); }
.grade.g-E, .grade.g-F { color: var(--fail); }
@media (prefers-color-scheme: dark) { .grade.g-B { color: #a3e635; } }

.badge-icon {
  flex: none; width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: var(--info-bg); color: var(--info);
}
.badge-icon svg { width: 30px; height: 30px; }
.badge-icon.pass { background: var(--pass-bg); color: var(--pass); }
.badge-icon.warn { background: var(--warn-bg); color: var(--warn); }
.badge-icon.fail { background: var(--fail-bg); color: var(--fail); }

.target-line {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 4px 0 14px;
}
.target-line h2 { margin: 0; font-size: 22px; word-break: break-all; }
.target-line .muted { color: var(--muted); font-size: 14px; word-break: break-all; }
.actions { margin-left: auto; display: flex; gap: 8px; }

/* ---------- cards ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); margin-bottom: 14px; min-width: 0;
}
.card > header {
  display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.card > header h2 { margin: 0; font-size: 16px; }
.card > header .counts { margin-left: auto; display: flex; gap: 6px; }
.card-body { padding: 6px 18px 14px; }
.card-body.flush { padding: 0; }
.card .note { color: var(--muted); font-size: 13.5px; margin: 10px 0; }

.pill {
  display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600;
  border-radius: 999px; padding: 2px 9px; background: var(--info-bg); color: var(--info); white-space: nowrap;
}
.pill.pass { background: var(--pass-bg); color: var(--pass); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.fail { background: var(--fail-bg); color: var(--fail); }

/* ---------- key/value facts ---------- */
.facts { display: grid; grid-template-columns: minmax(130px, 34%) 1fr; margin: 0; }
.facts dt, .facts dd { padding: 8px 0; border-bottom: 1px solid var(--border); margin: 0; min-width: 0; }
.facts dt { color: var(--muted); font-size: 13.5px; padding-right: 12px; }
.facts dd { word-break: break-word; }
.facts dt:last-of-type, .facts dd:last-of-type { border-bottom: 0; }
.mono { font-family: var(--mono); font-size: 12.5px; }

/* ---------- check rows ---------- */
.checks { list-style: none; margin: 0; padding: 0; }
.check { display: grid; grid-template-columns: 26px 1fr; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--border); }
.check:last-child { border-bottom: 0; }
.check .icon {
  width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; margin-top: 1px;
  font-size: 13px; font-weight: 800; background: var(--info-bg); color: var(--info);
}
.check.pass .icon { background: var(--pass-bg); color: var(--pass); }
.check.warn .icon { background: var(--warn-bg); color: var(--warn); }
.check.fail .icon { background: var(--fail-bg); color: var(--fail); }
.check .title { font-weight: 600; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.check .detail { color: var(--muted); font-size: 14px; word-break: break-word; }
.check details { margin-top: 4px; }
.check summary { cursor: pointer; color: var(--muted); font-size: 12.5px; }
.check pre {
  margin: 6px 0 0; padding: 8px 10px; background: var(--surface-2); border-radius: 8px;
  white-space: pre-wrap; word-break: break-all; font-family: var(--mono); font-size: 12px;
}

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 18px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
td.muted { color: var(--muted); }

/* ---------- protocol grid ---------- */
.protocols { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 12px 0 6px; }
.proto {
  border: 1px solid var(--border); border-radius: 10px; padding: 8px; text-align: center; background: var(--surface-2);
}
.proto b { display: block; font-size: 13.5px; }
.proto span { font-size: 12.5px; color: var(--muted); }
.proto.good { border-color: color-mix(in srgb, var(--pass) 45%, var(--border)); }
.proto.good span { color: var(--pass); }
.proto.bad { border-color: color-mix(in srgb, var(--fail) 45%, var(--border)); }
.proto.bad span { color: var(--fail); }

h3.sub-h { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 16px 0 4px; }

/* ---------- VirusTotal bar ---------- */
.vt-bar { display: flex; height: 10px; border-radius: 999px; overflow: hidden; background: var(--surface-2); margin: 12px 0 8px; }
.vt-bar span { display: block; height: 100%; }
.vt-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--muted); }
.vt-legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 5px; }
.c-mal { background: var(--fail); }
.c-sus { background: var(--warn); }
.c-harm { background: var(--pass); }
.c-und { background: var(--info); opacity: .5; }

/* ---------- loading ---------- */
.loading { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 18px 0; }
.spinner {
  width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid var(--border); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2.5s; } }
.error-box { color: var(--fail); background: var(--fail-bg); border-radius: 10px; padding: 10px 12px; margin: 12px 0; font-size: 14px; }

.footer { max-width: 1120px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: 13px; text-align: center; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .summary { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .scan-form { border-radius: 16px; flex-direction: column; }
  .scan-form button { width: 100%; }
  .protocols { grid-template-columns: repeat(3, 1fr); }
  .facts { grid-template-columns: 1fr; }
  .facts dt { border-bottom: 0; padding-bottom: 0; }
  th, td { padding: 8px 12px; }
  .card-body { padding: 4px 14px 12px; }
  .card > header { padding: 12px 14px; }
  .actions { margin-left: 0; }
}