:root {
  --brand: #1D4ED8;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #64748B;
  --border: #CBD5E1;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container { max-width: 640px; width: 100%; padding: 2rem; }

h1 { font-size: 2rem; font-weight: 700; margin-bottom: 0.25rem; }
.subtitle { color: var(--muted); margin-bottom: 2rem; }

.input-group { display: flex; gap: 0.5rem; }
input[type="url"] {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
input[type="url"]:focus { border-color: var(--brand); }

button {
  padding: 0.75rem 1.5rem;
  background: var(--brand);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}
button:hover { opacity: 0.85; }

.status { margin-top: 0.75rem; font-size: 0.875rem; color: var(--muted); min-height: 1.2em; }
.disclaimer { margin-top: 2rem; padding: 0.75rem 1rem; background: #FEF3C7;
  border-radius: var(--radius); font-size: 0.8rem; color: #92400E; }