body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(to bottom right, #3D0070, #9C27B0);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
        }
        .login-container {
            background: #fff;
            width: 100%;
            max-width: 420px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            overflow: hidden;
        }
        .login-header {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 25px;
            text-align: center;
        }
        .login-body {
            padding: 30px;
        }
        .logo {
            text-align: center;
            margin-bottom: 10px;
        }
        .logo img {
            max-width: 180px;
            height: auto;
        }
        .form-control {
            padding: 12px 15px;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .form-control:focus {
            border-color: #3498db;
            box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
        }
        .input-group {
            position: relative;
        }
        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #6c757d;
            cursor: pointer;
            z-index: 5;
        }
        .btn-login {
            background: linear-gradient(135deg, #3498db 0%, #2c3e50 100%);
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
        }
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
        }
        .alert-custom {
            border-radius: 8px;
            border: none;
            padding: 15px;
            margin-bottom: 20px;
        }
        .alert-success-custom {
            background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
            color: #155724;
            border-left: 4px solid #28a745;
        }
        .alert-error-custom {
            background: linear-gradient(135deg, #f8d7da 0%, #f1b0b7 100%);
            color: #721c24;
            border-left: 4px solid #dc3545;
        }
        .login-title {
            font-weight: 700;
            margin-bottom: 5px;
            font-size: 1.5rem;
        }
        .login-subtitle {
            font-size: 0.9rem;
            opacity: 0.9;
            margin-bottom: 0;
        }
        .error {
            color: #dc3545;
            font-size: 0.875rem;
            margin-top: 5px;
            display: block;
        }