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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f1117;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.login-box {
  background: #1a1d27;
  border: 1px solid #2a2d3a;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 360px;
  text-align: center;
}

h1 {
  color: #e2e8f0;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.75rem;
  letter-spacing: 0.02em;
}

input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: #0f1117;
  border: 1px solid #2a2d3a;
  border-radius: 8px;
  color: #e2e8f0;
  font-size: 1rem;
  margin-bottom: 0.75rem;
  outline: none;
  transition: border-color 0.15s;
}

input[type="password"]:focus {
  border-color: #4f8ef7;
}

button {
  width: 100%;
  padding: 0.75rem;
  background: #4f8ef7;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover { background: #3b7de9; }

.error {
  margin-top: 0.75rem;
  color: #f87171;
  font-size: 0.875rem;
}

.hidden { display: none; }