:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #1a1d24;
  --muted: #4e5563;
  --accent: #0b5fff;
  --accent-hover: #0849c7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at 20% 20%, #ffffff 0%, var(--bg) 60%);
  color: var(--text);
}

.container {
  max-width: 640px;
  margin: 12vh auto;
  padding: 2rem;
  background: var(--panel);
  border-radius: 14px;
  box-shadow: 0 8px 36px rgba(30, 52, 91, 0.12);
}

h1 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

p {
  margin: 0.5rem 0 1rem;
  color: var(--muted);
}

label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

select {
  width: 100%;
  max-width: 220px;
  margin-bottom: 1rem;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  border: 1px solid #c7cfde;
  background: #fff;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 0.75rem 1.1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}

button:hover {
  background: var(--accent-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#status {
  margin-top: 1rem;
}