:root {
  --fg: #1c1c1c;
  --muted: #666;
  --bg: #fafafa;
  --card: #fff;
  --border: #ddd;
  --accent: #2563eb;
  --error: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 2rem auto;
  padding: 0 1rem;
}

h1 { margin-top: 0; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }

label { display: block; font-weight: 600; margin-bottom: 0.25rem; }

.row { display: flex; gap: 0.5rem; align-items: center; }

input[type="url"] {
  flex: 1;
  min-width: 0;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
}

button {
  padding: 0.6rem 1rem;
  font-size: 1rem;
  border: 0;
  border-radius: 6px;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }

.error { color: var(--error); margin: 0.5rem 0 0; }
.muted { color: var(--muted); }

#result { padding: 1rem; background: var(--card); border: 1px solid var(--border); border-radius: 6px; margin-top: 1rem; }
#short-url { flex: 1; font-size: 1.1rem; word-break: break-all; }

table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); border-radius: 6px; }
th, td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 0.85rem; color: var(--muted); }
tr:last-child td { border-bottom: 0; }
td.dest { max-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.num { text-align: right; }