html,
body {
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #000;
}

.form-signin {
  width: 100%;
  max-width: 380px;
  padding: 30px;
  margin: auto;
  background: #1a1a1a;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.form-signin .logo-container {
  text-align: center;
  margin-bottom: 20px;
}

.form-signin .logo-container img {
  max-width: 150px;
  height: auto;
  border-radius: 8px;
}

.form-signin h1 {
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 25px;
}

.form-signin .checkbox {
  font-weight: 400;
  color: #aaa;
}

.form-signin .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 12px 15px;
  font-size: 16px;
  background: #2a2a2a;
  border: 1px solid #333;
  color: #fff;
}

.form-signin .form-control::placeholder {
  color: #888;
}

.form-signin .form-control:focus {
  z-index: 2;
  background: #2a2a2a;
  border-color: #7c5ce7;
  color: #fff;
  box-shadow: 0 0 0 3px rgba(124, 92, 231, 0.2);
}

.form-signin input[type="email"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
  margin-bottom: 15px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.form-signin .btn-primary {
  background: linear-gradient(135deg, #7c5ce7 0%, #4facfe 100%);
  border: none;
  padding: 12px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.form-signin .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(124, 92, 231, 0.4);
}

.form-signin .btn-link {
  color: #7c5ce7;
}

.form-signin .btn-link:hover {
  color: #4facfe;
}

.form-signin .text-muted {
  color: #555 !important;
}

.form-signin .error-message {
  background: rgba(231, 76, 60, 0.2);
  border: 1px solid #e74c3c;
  color: #e74c3c;
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 15px;
}

.form-signin .success-message {
  background: rgba(46, 204, 113, 0.2);
  border: 1px solid #2ecc71;
  color: #2ecc71;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 15px;
}

.form-signin .success-message p {
  margin: 0;
}