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

body {
  background: #0a0a0a;
  color: #f0f0f0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-box {
  background: #1a1a2e;
  border: 1px solid #16213e;
  border-radius: 12px;
  padding: 40px 32px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.logo {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 4px;
  margin-bottom: 32px;
  background: linear-gradient(135deg, #e94560, #0f3460);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-group {
  margin-bottom: 16px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: #16213e;
  border: 1px solid #0f3460;
  border-radius: 8px;
  color: #f0f0f0;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: #e94560;
}

.form-group input::placeholder {
  color: #666;
}

.error-msg {
  color: #e94560;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 12px;
}

.hidden {
  display: none;
}

.btn-login {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #e94560, #c23152);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-top: 8px;
}

.btn-login:hover {
  opacity: 0.9;
}