/* FRANK — Field Book × Wire.
   A field-book is where an analyst writes what they saw; a wire is the raw
   feed underneath. Body copy sits in the field-book (Atkinson Hyperlegible,
   legible at 2am); all evidence — hashes, headers, hop IPs — sits on the
   wire (monospace, unstyled, exactly as received). */

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: local("Atkinson Hyperlegible");
  font-weight: 400;
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  src: local("Atkinson Hyperlegible Bold");
  font-weight: 700;
}

:root {
  --ink: #0c0f0d;
  --ink-raised: #12160f;
  --ink-line: #171c15;
  --paper: #e7e2d3;
  --paper-dim: #9a9787;
  --paper-faint: #5c5b52;
  --rule: #2b322c;
  --stamp-red: #b4372b;
  --stamp-amber: #c69433;
  --stamp-green: #6e9c7d;
  --stamp-slate: #7c8078;
  --signal: #4fa8a0;

  --font-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", "IBM Plex Mono", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--ink);
  background-image:
    radial-gradient(ellipse at top, rgba(79, 168, 160, 0.06), transparent 60%);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: var(--signal);
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.wire {
  font-family: var(--font-mono);
}

button {
  font-family: inherit;
}

/* ---------- shell ---------- */

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px 96px;
}

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}

.masthead .wordmark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.masthead .wordmark small {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--paper-dim);
  margin-top: 3px;
}

.masthead .tally {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper-dim);
  text-align: right;
  white-space: nowrap;
}

.masthead .tally strong {
  color: var(--signal);
}

/* ---------- intake ---------- */

.intake {
  border: 1px dashed var(--rule);
  border-radius: 2px;
  padding: 28px;
  position: relative;
  transition: border-color 120ms ease, background-color 120ms ease;
  background: var(--ink-raised);
}

.intake::before,
.intake::after,
.intake .corner-tl,
.intake .corner-br {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--paper-faint);
  border-style: solid;
  border-width: 0;
}
.intake::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.intake::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.intake.dragover {
  border-color: var(--signal);
  background: rgba(79, 168, 160, 0.06);
}

.intake .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--paper-dim);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.intake .instructions {
  font-size: 0.95rem;
  color: var(--paper-dim);
  margin-bottom: 16px;
}

.intake .instructions strong {
  color: var(--paper);
}

.intake .filepick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--signal);
  cursor: pointer;
  border: 1px solid var(--rule);
  padding: 8px 14px;
  border-radius: 2px;
}
.intake .filepick:hover { border-color: var(--signal); }
.intake .filepick input { display: none; }

.intake textarea {
  width: 100%;
  min-height: 96px;
  margin-top: 16px;
  background: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--paper);
  /* Some browsers apply their own forced/auto dark-mode heuristics to form
     controls independent of the page's own CSS, which can silently override
     just the text color and leave the (correct) dark background alone —
     the classic invisible-text-on-paste symptom. Force it explicitly on
     every box so there's nothing left for a heuristic to override. */
  -webkit-text-fill-color: var(--paper);
  caret-color: var(--paper);
  color-scheme: dark;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 12px;
  resize: vertical;
}
.intake textarea::placeholder { color: var(--paper-faint); }

.intake .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--paper-dim);
}
/* Fully custom checkbox, not native rendering: an unstyled checkbox is at
   the mercy of the browser/OS dark-mode theme, which on some platforms
   draws a black border on a near-black fill against this dark page —
   effectively invisible. Drawing it ourselves removes that variable. */
.toggle input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  min-width: 14px;
  margin: 0;
  background: var(--ink);
  border: 1px solid var(--paper-dim);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}
.toggle input[type="checkbox"]:hover {
  border-color: var(--signal);
}
.toggle input[type="checkbox"]:checked {
  background: var(--signal);
  border-color: var(--signal);
}
.toggle input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.submit-btn {
  background: var(--paper);
  color: var(--ink);
  border: none;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  padding: 11px 20px;
  cursor: pointer;
}
.submit-btn:hover { background: var(--signal); }
.submit-btn:disabled { opacity: 0.5; cursor: progress; }

.pending-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--signal);
}

.error-line {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--stamp-red);
  display: none;
}
.error-line.show { display: block; }

/* ---------- result ---------- */

#result {
  margin-top: 44px;
  display: none;
}
#result.show { display: block; }

.stamp-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--rule);
}

.stamp {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  padding: 10px 22px;
  border: 3px solid currentColor;
  border-radius: 3px;
  transform: rotate(-2.5deg);
  display: inline-block;
  position: relative;
}
.stamp::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid currentColor;
  border-radius: 1px;
  opacity: 0.5;
}
.stamp.authentic { color: var(--stamp-green); }
.stamp.suspicious { color: var(--stamp-amber); }
.stamp.malicious { color: var(--stamp-red); }
.stamp.inconclusive { color: var(--stamp-slate); }

.stamp-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper-dim);
  line-height: 1.9;
}
.stamp-meta .k { color: var(--paper-faint); margin-right: 6px; }
.stamp-meta .ledger-ok { color: var(--stamp-green); }
.stamp-meta .ledger-bad { color: var(--stamp-red); }

.report-links {
  margin-left: auto;
  display: flex;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
}
.report-links a {
  border: 1px solid var(--rule);
  padding: 6px 10px;
  border-radius: 2px;
  color: var(--paper-dim);
  text-decoration: none;
}
.report-links a:hover { color: var(--signal); border-color: var(--signal); }

section.block {
  margin-bottom: 36px;
}

.block h2 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-dim);
  font-weight: 400;
  margin: 0 0 12px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.block h2 .count {
  color: var(--paper-faint);
}
.block h2::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid var(--rule);
}

/* identity matrix */

table.matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table.matrix td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--ink-line);
  vertical-align: top;
}
table.matrix td.label {
  font-family: var(--font-mono);
  color: var(--paper-dim);
  width: 120px;
  white-space: nowrap;
}
table.matrix td.value {
  font-family: var(--font-mono);
  color: var(--paper);
  word-break: break-all;
}
table.matrix .flag {
  color: var(--stamp-amber);
  margin-left: 8px;
}

/* findings */

.finding {
  display: grid;
  grid-template-columns: 20px 88px 1fr;
  gap: 4px 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ink-line);
  align-items: start;
}
.finding .dot {
  font-size: 0.9rem;
  line-height: 1.6;
}
.finding.fail .dot { color: var(--stamp-red); }
.finding.suspect .dot { color: var(--stamp-amber); }
.finding.notice .dot { color: var(--signal); }
.finding.info .dot { color: var(--paper-faint); }

.finding .sev {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding-top: 2px;
}
.finding.fail .sev { color: var(--stamp-red); }
.finding.suspect .sev { color: var(--stamp-amber); }
.finding.notice .sev { color: var(--signal); }
.finding.info .sev { color: var(--paper-faint); }

.finding .body .title {
  font-size: 0.92rem;
  color: var(--paper);
}
.finding .body .meta {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--paper-dim);
}
.finding .body .evidence {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--paper-dim);
  background: var(--ink-raised);
  border-left: 2px solid var(--rule);
  padding: 6px 10px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.finding .body .check-id {
  color: var(--paper-faint);
}
.finding .body .attck {
  color: var(--stamp-amber);
}

/* received chain */

.hop {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 4px 14px;
  padding: 9px 0;
  border-bottom: 1px solid var(--ink-line);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  align-items: baseline;
}
.hop .n {
  color: var(--paper-faint);
}
.hop .host {
  color: var(--paper);
}
.hop .ip {
  color: var(--paper-dim);
}
.hop .delta {
  color: var(--paper-dim);
  text-align: right;
  white-space: nowrap;
}
.hop .delta.neg {
  color: var(--stamp-red);
}
.hop .anomalies {
  grid-column: 2 / -1;
  color: var(--stamp-amber);
  font-size: 0.72rem;
}

/* mime artifacts */

.artifact {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  gap: 4px 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ink-line);
  align-items: start;
}
.artifact .kind {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--paper-faint);
}
.artifact.attachment .kind {
  color: var(--signal);
}
.artifact .name {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--paper);
  word-break: break-all;
}
.artifact .meta {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--paper-dim);
}
.artifact .meta .mismatch {
  color: var(--stamp-amber);
}
.artifact .hashes {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-faint);
  word-break: break-all;
}
.artifact .size {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--paper-dim);
  text-align: right;
  white-space: nowrap;
}
.artifact .finding-badge {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--stamp-amber);
  color: var(--stamp-amber);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

/* raw panel */

details.raw {
  border: 1px solid var(--rule);
  border-radius: 2px;
}
details.raw summary {
  cursor: pointer;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  text-transform: uppercase;
}
details.raw summary:hover { color: var(--signal); }
details.raw pre {
  margin: 0;
  padding: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper-dim);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 480px;
  overflow-y: auto;
}

/* ledger strip */

.ledger-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--paper-dim);
}
.ledger-strip .node {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--rule);
  padding: 4px 8px;
  border-radius: 999px;
}
.ledger-strip .node::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--signal);
}

@media (max-width: 640px) {
  .finding { grid-template-columns: 16px 1fr; }
  .finding .sev { grid-column: 2; }
  .finding .body { grid-column: 2; }
  .hop { grid-template-columns: 1fr; }
  .hop .delta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}