:root {
  color-scheme: light;
  --text: #202124;
  --muted: #73777e;
  --line: #e5e7eb;
  --accent: #2563eb;
  --danger: #b42318;
  --success: #18794e;
  --warning: #946200;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  width: min(640px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0;
}

h1 {
  margin: 0 0 28px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -.5px;
}

button,
input { font: inherit; }

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 14px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
}

button:hover { background: #f5f6f8; }

button:disabled {
  cursor: wait;
  opacity: .55;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

form {
  display: grid;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}

label {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
}

label span { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

input {
  width: 100%;
  min-width: 0;
  color: var(--muted);
}

.usercert-field {
  display: grid;
  gap: 6px;
}

.usercert-field input {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 8px 10px;
  color: var(--text);
}

.usercert-field small {
  color: var(--muted);
  font-size: 11px;
}

input::file-selector-button {
  margin-right: 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 6px 10px;
  background: #f8f9fa;
  color: var(--text);
  cursor: pointer;
}

form button {
  margin-top: 4px;
  border-color: var(--text);
  background: var(--text);
  color: #fff;
}

form button:hover { background: #383b40; }

.dev-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 12px;
}

.dev-tools > span { flex-shrink: 0; }

.preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preview-actions button {
  padding: 4px 8px;
  color: var(--muted);
  font-size: 12px;
}

.result {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}

.result-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
}

.result-head strong { font-weight: 600; }
.result-head > span { font-variant-numeric: tabular-nums; }
.result.error strong { color: var(--danger); }
.result.success strong { color: var(--success); }
.result.active strong { color: var(--warning); }

.meter {
  height: 4px;
  margin: 16px 0;
  overflow: hidden;
  border-radius: 2px;
  background: #f0f1f3;
}

.meter i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--success);
  transition: width .25s;
}

.result.error .meter i { background: var(--danger); }
.result.active .meter i { background: var(--warning); }

#message {
  margin: 0 0 12px;
  color: var(--muted);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#job-id {
  display: block;
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.flag-result {
  margin-top: 16px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.flag-result strong {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
}

.flag-result code {
  display: block;
  color: var(--text);
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  user-select: text;
}

.hint {
  margin: 16px 0;
  color: var(--muted);
  font-size: 12px;
}

.hidden { display: none !important; }

@media (max-width: 540px) {
  main { padding: 36px 0; }
  h1 { font-size: 23px; }
  label { grid-template-columns: 1fr; gap: 8px; }
  form, .result { padding: 20px; }
  .dev-tools { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .meter i { transition: none; }
}