/* Phone-first: this page is meant to be read one-handed while holding a probe
   against a meter, so touch targets stay large and nothing scrolls sideways. */

:root {
  --bg: #0b1220;
  --card: #131c2e;
  --edge: #24334d;
  --ink: #e6edf7;
  --muted: #93a4c0;
  --accent: #4da3ff;
  --pass: #34d399;
  --fail: #f87171;
  --warn: #fbbf24;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 0 3rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
}

header {
  padding: 1.5rem 1rem 0.5rem;
  max-width: 900px;
  margin: 0 auto;
}

h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.sub {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 12px;
  padding: 1rem;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* --- verdict ------------------------------------------------------------- */

.verdict {
  border-radius: 10px;
  padding: 0.9rem 1rem;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid;
}

.verdict--pass {
  background: rgba(52, 211, 153, 0.12);
  border-color: var(--pass);
  color: var(--pass);
}

.verdict--fail {
  background: rgba(248, 113, 113, 0.12);
  border-color: var(--fail);
  color: var(--fail);
}

.verdict--warn {
  background: rgba(251, 191, 36, 0.12);
  border-color: var(--warn);
  color: var(--warn);
}

/* --- controls ------------------------------------------------------------ */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

button {
  flex: 1 1 auto;
  min-height: 48px;
  padding: 0 1rem;
  border-radius: 10px;
  border: 1px solid var(--edge);
  background: #1b2740;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06111f;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.status {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

/* --- options ------------------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input[type='number'],
textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--edge);
  background: #0d1626;
  color: var(--ink);
  font-size: 1rem;
  font-family: inherit;
}

textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  resize: vertical;
}

.check {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.85rem;
  color: var(--ink);
  font-size: 0.88rem;
}

.check input {
  width: 22px;
  height: 22px;
  margin-top: 1px;
  flex: 0 0 auto;
}

/* --- results ------------------------------------------------------------- */

.results {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.result {
  display: grid;
  grid-template-columns: 3.6rem 2.2rem 1fr;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  background: #0d1626;
  border-left: 3px solid var(--edge);
  font-size: 0.86rem;
}

.result--pass {
  border-left-color: var(--pass);
}
.result--fail {
  border-left-color: var(--fail);
}
.result--skip {
  border-left-color: var(--warn);
}

.badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-align: center;
  padding: 0.15rem 0;
  border-radius: 4px;
  background: #1b2740;
}

.result--pass .badge {
  color: var(--pass);
}
.result--fail .badge {
  color: var(--fail);
}
.result--skip .badge {
  color: var(--warn);
}

.layer {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

/* --- log + dumps --------------------------------------------------------- */

.log {
  max-height: 340px;
  overflow: auto;
  background: #060c17;
  border: 1px solid var(--edge);
  border-radius: 8px;
  padding: 0.6rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.74rem;
  line-height: 1.5;
}

.line {
  display: flex;
  gap: 0.6rem;
  padding: 0.1rem 0;
}

.line .ts {
  color: #4a5b78;
  flex: 0 0 auto;
}

.line .msg {
  word-break: break-all;
}

.line--pass .msg {
  color: var(--pass);
}
.line--fail .msg {
  color: var(--fail);
}
.line--warn .msg {
  color: var(--warn);
}

.dump {
  margin: 0;
  max-height: 320px;
  overflow: auto;
  background: #060c17;
  border: 1px solid var(--edge);
  border-radius: 8px;
  padding: 0.6rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  white-space: pre;
}

.hint {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0 0 0.6rem;
}

.notes ul {
  margin: 0 0 0.6rem;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.notes li {
  margin-bottom: 0.35rem;
}

.notes strong {
  color: var(--ink);
}

footer {
  max-width: 900px;
  margin: 1.5rem auto 0;
  padding: 0 1rem;
  color: #4a5b78;
  font-size: 0.75rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f7fb;
    --card: #ffffff;
    --edge: #d6dfec;
    --ink: #10182a;
    --muted: #5b6b85;
    color-scheme: light;
  }

  .log,
  .dump,
  .result,
  input[type='number'],
  textarea {
    background: #f7fafd;
  }

  button {
    background: #eef3fa;
  }

  .line .ts {
    color: #93a4c0;
  }
}