* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  padding: 20px;
}

.card {
  background: #ffffff;
  border-radius: 16px;
  padding: 40px;
  max-width: 380px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

h1 {
  margin: 0 0 8px;
  color: #1e293b;
  font-size: 24px;
}

.subtitle {
  color: #64748b;
  font-size: 14px;
  margin-bottom: 24px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

input[type="password"] {
  padding: 12px 14px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

input[type="password"]:focus {
  border-color: #6366f1;
}

button {
  padding: 12px 14px;
  border: none;
  border-radius: 8px;
  background: #6366f1;
  color: white;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

button:hover {
  background: #4f46e5;
}

button:active {
  transform: scale(0.98);
}

.error {
  color: #ef4444;
  font-size: 13px;
  min-height: 18px;
  margin-top: 12px;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.option-btn {
  background: #f1f5f9;
  color: #1e293b;
}

.option-btn:hover {
  background: #e2e8f0;
}

.logout {
  background: transparent;
  color: #94a3b8;
  font-weight: 400;
  font-size: 13px;
}

.logout:hover {
  background: transparent;
  color: #64748b;
  text-decoration: underline;
}