:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #7c3aed;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e5e7eb;
    --bg: #111114;
    --muted: #9ca3af;
    --border: #2a2a30;
    --danger-bg: #2a1414;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

header, main, footer {
  max-width: 560px;
  margin: 0 auto;
  padding: 1.5rem;
}

header h1 {
  margin-bottom: 0.25rem;
}

.logo {
  height: 1.5em;
  width: auto;
  vertical-align: -0.3em;
  margin-right: 0.35rem;
}

.back-link {
  margin: 0 0 0.75rem 0;
  font-size: 0.9rem;
}

.back-link a {
  color: var(--muted);
  text-decoration: none;
}

.back-link a:hover {
  text-decoration: underline;
}

.tagline {
  color: var(--muted);
}

code {
  background: var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
  font-size: 0.85em;
  word-break: break-all;
}

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

.notice {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.user-icon-row {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.user-icon {
  height: 3rem;
  width: auto;
  opacity: 0.9;
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.tab-button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 1rem;
  padding: 0.5rem 0.25rem;
  cursor: pointer;
}

.tab-button.active {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

form {
  display: grid;
  gap: 0.5rem;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

input {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  background: var(--bg);
  color: var(--fg);
}

button {
  font: inherit;
  cursor: pointer;
}

form button[type="submit"] {
  margin-top: 1rem;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 0.375rem;
  background: var(--accent);
  color: white;
  font-weight: 600;
}

.error {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  background: var(--danger-bg);
  color: var(--danger);
  font-size: 0.9rem;
}

.result {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.25rem;
}

.copy-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.copy-row code {
  flex: 1;
  overflow-wrap: anywhere;
}

.bunker-uri {
  font-size: 0.75rem;
}

.copy-button {
  flex-shrink: 0;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  background: var(--bg);
  color: var(--fg);
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.dashboard-header h2 {
  margin: 0;
}

.link-button {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.9rem;
  padding: 0;
}

.identity-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1rem;
  margin: 0 0 1.5rem 0;
}

.identity-card {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
}

.identity-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.identity-npub {
  font-size: 0.75rem;
}

.identity-actions {
  display: flex;
  gap: 0.5rem;
}

.identity-actions button {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.85rem;
}

.bunker-link-area,
.activity-area {
  margin-top: 1rem;
}

.activity-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.activity-table th,
.activity-table td {
  text-align: left;
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.activity-empty {
  color: var(--muted);
  font-size: 0.85rem;
}

.create-identity-form {
  border: 1px dashed var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
}

footer {
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}