:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e38;
  --text: #e6e8ee;
  --muted: #9aa1ae;
  --accent: #5b8cff;
  --danger: #ff6b6b;
  --success: #4dd08a;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

header.site-header .title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

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

header.site-header .tagline {
  color: var(--muted);
  font-size: 0.9rem;
}

nav.site-nav {
  display: flex;
  gap: 16px;
  margin-top: 10px;
}

nav.site-nav a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95rem;
}

nav.site-nav a:hover { text-decoration: underline; }

.announcement {
  padding: 10px 24px;
  background: #22314a;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.announcement.warn { background: #4a3a1f; }
.announcement.error { background: #4a2323; }

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 40px;
  text-align: center;
}

footer.site-footer a { color: var(--accent); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}

.card .meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 8px;
}

.card .message {
  white-space: pre-wrap;
  word-break: break-word;
}

form { display: flex; flex-direction: column; gap: 14px; }

label { font-size: 0.9rem; color: var(--muted); }

input[type="text"], textarea, input[type="number"] {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 1rem;
  width: 100%;
  font-family: inherit;
}

textarea { min-height: 120px; resize: vertical; }

.char-count { font-size: 0.8rem; color: var(--muted); text-align: right; }
.char-count.over { color: var(--danger); }

button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 1rem;
  cursor: pointer;
}

button:disabled { opacity: 0.5; cursor: not-allowed; }
button:hover:not(:disabled) { opacity: 0.9; }

.checkbox-row { display: flex; align-items: center; gap: 8px; flex-direction: row; }
.checkbox-row label { color: var(--text); }

.error-box {
  background: #3a1f1f;
  border: 1px solid var(--danger);
  color: #ffb3b3;
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.success-box {
  background: #1f3a2a;
  border: 1px solid var(--success);
  color: #b3ffcf;
  padding: 12px;
  border-radius: var(--radius);
}

.success-box .key {
  font-family: monospace;
  font-size: 1.4rem;
  letter-spacing: 2px;
  background: var(--panel);
  padding: 8px 12px;
  border-radius: var(--radius);
  display: inline-block;
  margin: 8px 0;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.pagination button { min-width: 90px; }

.empty-state { color: var(--muted); text-align: center; padding: 40px 0; }