:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #1a202c;
  --muted: #718096;
  --primary: #2b6cb0;
  --danger: #c53030;
  --good: #276749;
}

* { box-sizing: border-box; }

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

header {
  background: var(--primary);
  color: #fff;
  padding: 1rem 2rem;
}
header h1 { margin: 0; font-size: 1.4rem; }
header .subtitle { margin: 0.25rem 0 0; opacity: 0.85; font-size: 0.9rem; }
header .nav { margin-top: 0.75rem; display: flex; gap: 0.5rem; }
header .nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
}
header .nav a:hover { background: rgba(255, 255, 255, 0.3); }

main { padding: 1.5rem 2rem; max-width: 960px; margin: 0 auto; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}
.panel h2 { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; }

form { display: inline; }
.add-source { display: flex; gap: 0.5rem; margin-top: 1rem; flex-wrap: wrap; }
.add-source input { flex: 1 1 200px; padding: 0.5rem; border: 1px solid var(--border); border-radius: 4px; }

button {
  cursor: pointer;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #edf2f7;
  color: var(--text);
  font-size: 0.85rem;
}
button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
button.danger { background: #fff5f5; color: var(--danger); border-color: #feb2b2; }

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

.tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.tabs a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.tabs a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.item {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.item h3 { margin: 0 0 0.5rem; }
.item .meta { color: var(--muted); font-size: 0.85rem; margin: 0 0 0.5rem; }
.item .reason { color: var(--muted); font-style: italic; font-size: 0.85rem; }

.tag {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: #edf2f7;
  margin-right: 0.4rem;
  font-size: 0.75rem;
}
.tag.good { background: #c6f6d5; color: var(--good); }
.tag.bad { background: #fed7d7; color: var(--danger); }

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

.button-link {
  display: inline-block;
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--primary);
  border-radius: 4px;
  background: var(--primary);
  color: #fff;
  font-size: 0.85rem;
}

.inline-interval { display: flex; align-items: center; gap: 0.3rem; }
.inline-interval input { width: 4rem; padding: 0.3rem; border: 1px solid var(--border); border-radius: 4px; }

.stacked { display: flex; flex-direction: column; gap: 1rem; }
.stacked label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; }
.stacked textarea, .stacked input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.9rem;
  width: 100%;
}
.stacked textarea { resize: vertical; }

.post-preview {
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #f7fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  font-family: inherit;
  margin: 0;
}