:root {
  color-scheme: light;
  --bg: #f0f2f5;
  --card: #ffffff;
  --text: #1f2a37;
  --muted: #5b6b7c;
  --border: #d9dee3;
  --accent: #1565c0;
  --accent-hover: #0d47a1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: min(100%, 26rem);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.08);
  padding: 2rem 1.75rem 1.75rem;
}

.login-card h1 {
  margin: 0 0 0.75rem;
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.3;
}

.login-card p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.login-button {
  width: 100%;
  border: 0;
  border-radius: 6px;
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}

.login-button:hover:not(:disabled) {
  background: var(--accent-hover);
}

.login-button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.login-error {
  display: none;
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 6px;
  background: #fdecea;
  color: #8a1c13;
  font-size: 0.85rem;
  line-height: 1.4;
}

.login-error.is-visible {
  display: block;
}