:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e38;
  --text: #e6e8eb;
  --muted: #8a90a0;
  --header-color: #d63384;
  --payload-color: #7c5cff;
  --sig-color: #17a2b8;
  --ok: #2fbf71;
  --bad: #e5484d;
  --warn: #e5a844;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header {
  padding: 1.25rem 2rem 0.5rem;
}

header h1 {
  margin: 0;
  font-size: 1.4rem;
}

.subtitle {
  color: var(--muted);
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
}

main {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  align-items: stretch;
  gap: 1.25rem;
  padding: 1.25rem 2rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
}

.left-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.block h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

#encoded {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  background: #10131a;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
  word-break: break-all;
}

.payload-block {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 0.9rem 0.9rem;
}

.block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  color: #0f1115;
}

.header-badge { background: var(--header-color); }
.payload-badge { background: var(--payload-color); }
.signature-badge { background: var(--sig-color); }

.json-editor {
  width: 100%;
  min-height: 80px;
  resize: vertical;
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0.25rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
}

.payload-editor {
  flex: 1;
  min-height: 480px;
}

.json-editor:focus {
  outline: none;
  border-color: var(--border);
  background: #10131a;
}

.pem-input {
  width: 100%;
  min-height: 100px;
  background: #10131a;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.error {
  color: var(--bad);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  min-height: 1em;
}

.verify-status {
  font-size: 0.8rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: #262a33;
  color: var(--muted);
}

.verify-status.ok { background: rgba(47,191,113,0.15); color: var(--ok); }
.verify-status.bad { background: rgba(229,72,77,0.15); color: var(--bad); }
.verify-status.warn { background: rgba(229,168,68,0.15); color: var(--warn); }

.sig-controls label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.sig-controls input[type="text"] {
  width: 100%;
  background: #10131a;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.checkbox input { width: auto; }

.hint {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0.25rem 0 0;
}

.claims-summary {
  margin-top: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
}

.claims-summary h3 {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#claimsTable {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

#claimsTable td {
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

#claimsTable td:first-child {
  color: var(--muted);
  white-space: nowrap;
  width: 1%;
  font-family: var(--mono);
}

#claimsTable tr.expired td { color: var(--bad); }
#claimsTable tr.notyet td { color: var(--warn); }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 1rem 0 2rem;
}